This is a simple Finger Trap, base size works well, but it seems best at 150% and even 200% scale. The setup is similar to real traps of this style. The kids like sticking candies on it and waiting for friends to try and grab them.

The release finger (the L shaped piece, not the paddle) could use a little support while printing. It is best to just paint on some supports where you need it, the rest of the model is fine without.

It can help to bend the springs a little to give them more pop and help the jaws close fully. The U pins holding the jaws sometimes work out, a drop of glue can resolve this.