[Wobbing Cone] from https://www.reddit.com/r/SwiftUI/comments/fsj0yp/neat_wobbling_tower_effect_code_in_comments/

WobblingCone.swift

extension CGSize {
    public static func + (lhs: CGSize, rhs: CGSize) -> CGSize {
        CGSize(width: lhs.width+rhs.width,
               height: lhs.height+rhs.height)
    }
    
    public static func += (lhs: inout CGSize, rhs: CGSize) {
        lhs.width += rhs.width
        lhs.height += rhs.height
    }
}

struct WobblyCone: View {
    @State private var offset: CGSize = .zero
    @State private var dragState: CGSize = .zero
    
    private let hueColors: [Double] = stride(from: 0, to: 1, by: 0.04).map({$0})
    
    var body: some View {
        let gesture = DragGesture()
            .onChanged({ self.dragState = $0.translation })
            .onEnded({ (value) in
                self.offset += value.translation
                self.dragState = .zero
            })
        
        
        return ZStack {
            ForEach(hueColors, id: \.self) { (hue) in
                Circle()
                    .fill(Color(hue: hue, saturation: 1, brightness: 1))
                    .padding()
                    .scaleEffect(CGFloat(1.0-hue))
                    .offset(self.offset + self.dragState)
                    .gesture(gesture)
                    .animation(.easeInOut(duration: 1 + 2*hue))
            }
        }
        
    }
}