View Quiviring for iOS, like in Springboard. Ideal for collection views before deleting.

quiver.m

// INSERT CELL ANIMATION SNIPPET HERE
- (void)startQuivering
{
    CABasicAnimation *quiverAnim = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
    float startAngle = (-2) * M_PI/180.0;
    float stopAngle = -startAngle;
    quiverAnim.fromValue = [NSNumber numberWithFloat:startAngle];
    quiverAnim.toValue = [NSNumber numberWithFloat:3 * stopAngle];
    quiverAnim.autoreverses = YES;
    quiverAnim.duration = 0.2;
    quiverAnim.repeatCount = HUGE_VALF;
    float timeOffset = (float)(arc4random() % 100)/100 - 0.50;
    quiverAnim.timeOffset = timeOffset;
    CALayer *layer = self.layer;
    [layer addAnimation:quiverAnim forKey:@"quivering"];
}
- (void)stopQuivering
{
    CALayer *layer = self.layer;
    [layer removeAnimationForKey:@"quivering"];
}