A UIView category of basic operations you kinda expect to be there but aren't. Contributions welcome!

UIView+Marshmallows.h

#import <UIKit/UIKit.h>

@interface UIView (Marshmallows)

@property (nonatomic) CGFloat rotation;

/** @name Positioning convenience methods */
- (void)moveByDeltaX:(CGFloat)delX deltaY:(CGFloat)delY;
- (void)moveOriginToX:(CGFloat)theX;
- (void)moveOriginToY:(CGFloat)theY;
- (void)moveOriginToX:(CGFloat)theX y:(CGFloat)theY;
- (void)moveOriginToX:(CGFloat)theX y:(CGFloat)theY;
/// *}

/** @name Resizing convenience methods */
- (void)resizeByWidth:(CGFloat)deltaW height:(CGFloat)deltaH;
- (void)resizeToWidth:(CGFloat)aWidth height:(CGFloat)aHeight;
- (void)resizeToWidth:(CGFloat)aWidth;
- (void)resizeToHeight:(CGFloat)aHeight;
- (void)resizeToSize:(CGSize)aSize;
/// *}

/// Returns the UIImage render of the current view
- (UIImage *)imageSnapshot;

/// Returns a UIImageView rendered version of the current view with the same frame
- (UIImageView *)imageViewSnapshot;

@end

UIView+Marshmallows.m

/**
 \addtogroup Marshmallows
 \author     Created by Hari Karam Singh on 06/08/2012.
 \copyright  Copyright (c) 2012 Club 15CC. All rights reserved.
 @{
 */

#import "UIView+Marshmallows.h"
#import <objc/runtime.h>
#import <QuartzCore/QuartzCore.h>

/// Key for objc_*AssociatedObject functions
static char _rotation;

/////////////////////////////////////////////////////////////////////////
#pragma mark - UIView (Marshmallows)
/////////////////////////////////////////////////////////////////////////

@implementation UIView (Marshmallows)

- (CGFloat)rotation
{
    NSNumber *n = objc_getAssociatedObject(self, &_rotation);
    return n.floatValue;
}

- (void)setRotation:(CGFloat)rotation
{
    // Get the delta required to align the view to the new rotation
    CGFloat delta = rotation - _rotation;
    
    // Do the rotation and update the property
    self.transform = CGAffineTransformMakeRotation(delta);
    
    // Must convert to an object for this trick to work
    objc_setAssociatedObject(self, &_rotation, @(rotation), OBJC_ASSOCIATION_COPY);
}

/////////////////////////////////////////////////////////////////////////

- (void)moveByDeltaX:(CGFloat)delX deltaY:(CGFloat)delY
{
    self.frame = CGRectMake(
                            self.frame.origin.x +delX,
                            self.frame.origin.y + delY,
                            self.frame.size.width,
                            self.frame.size.height
                            );
}

////////////////////////////////////////////////////////////////////////////

- (void)moveOriginToX:(CGFloat)theX
{
    self.frame = CGRectMake(
                            theX,
                            self.frame.origin.y,
                            self.frame.size.width,
                            self.frame.size.height
                            );
}

/////////////////////////////////////////////////////////////////////////


- (void)moveOriginToY:(CGFloat)theY
{
    self.frame = CGRectMake(
                            self.frame.origin.x,
                            theY,
                            self.frame.size.width,
                            self.frame.size.height
                            );
}

/////////////////////////////////////////////////////////////////////////

- (void)moveOriginToX:(CGFloat)theX y:(CGFloat)theY
{
    self.frame = CGRectMake(
                            theX,
                            theY,
                            self.frame.size.width,
                            self.frame.size.height
                            );
}

/////////////////////////////////////////////////////////////////////////


- (void)moveOriginTo:(CGPoint)aPoint
{
    CGRect f = self.frame;
    f.origin = aPoint;
    self.frame = f;
}



/////////////////////////////////////////////////////////////////////////
#pragma mark - Resizing Methods
/////////////////////////////////////////////////////////////////////////

- (void)resizeByWidth:(CGFloat)deltaW height:(CGFloat)deltaH
{
    self.frame = CGRectMake(self.frame.origin.x,
                            self.frame.origin.y,
                            self.frame.size.width + deltaW,
                            self.frame.size.height + deltaH);
}

/////////////////////////////////////////////////////////////////////////

- (void)resizeToWidth:(CGFloat)aWidth height:(CGFloat)aHeight
{
    self.frame = CGRectMake(self.frame.origin.x,
                            self.frame.origin.y,
                            aWidth,
                            aHeight);
}

/////////////////////////////////////////////////////////////////////////

- (void)resizeToWidth:(CGFloat)aWidth
{
    [self resizeToWidth:aWidth height:self.frame.size.height];
}

/////////////////////////////////////////////////////////////////////////

- (void)resizeToHeight:(CGFloat)aHeight
{
    [self resizeToWidth:self.frame.size.width height:aHeight];
}

/////////////////////////////////////////////////////////////////////////

- (void)resizeTo:(CGSize)aSize
{
    CGRect f = self.frame;
    f.size = aSize;
    self.frame = f;
}

/////////////////////////////////////////////////////////////////////////

- (UIImage *)imageSnapshot
{
    UIGraphicsBeginImageContext(self.bounds.size);
    [self.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return viewImage;
}

/////////////////////////////////////////////////////////////////////////

- (UIImageView *)imageViewSnapshot
{
    UIImageView *imgView = [[UIImageView alloc] initWithFrame:self.frame];
    imgView.image = self.imageSnapshot;
    return imgView;
}


/*- (void)dumpViewHierarchy
{
    [self _dumpViewHierarchyForViewSelfWithIndent:@""];
}
- (void)_dumpViewHierarchyForView:(UIView *)aView withIndent:(NSString *)indent
{
    NSLog(@"%@%@", indent, self);      // dump this view
    
    if (aView.subviews.count > 0) {
        NSString* subIndent = [[NSString alloc] initWithFormat:@"%@%@",
                               indent, ([indent length]/2)%2==0 ? @"| " : @": "];
        for (UIView* aSubview in aView.subviews) dumpView( aSubview, subIndent );
        [subIndent release];
    }
}*/
@end

/// @}