IconoclastWhat is a relatively inexpensive item that offers entertainment beyond it's intented usecase?
For what it’s worth you can also use a magnifying glass to create designs in wood; it doesn’t have to be for ant murder.
My add to this is a graphing calculator because you can put games on it and parents simply didn’t (and probably still don’t) know. You thought I was doing calculus? Ha level 19 in Tetris.
Who needs to add games when you have Block Dude?
Or BOOBIES.