Okay, I know this might sound stupid. I was in math yesterday and I was looking at the calculator the school give us Texas instruments TI-82 I think. And I was opening and closing the lid. Then I got to thinking, “would it be possible to have the trap itself (the yellow thing) attach to the rest of the case the same way that the lid attaches to the calculator?” The lid has two pieces of plastic inside of it that fit into two grooves on the calculator and they click into place and hold perfectly, unless you pull them apart. Like I said, I know it probably sounds weird but I thought that it might work instead of a magnet or something like that… What do you guys think?

Good Thinking, I like your idea.

It looked like the calculator was the size of the lid anyways.. I'm glad to hear that someone else thinks it's a decent idea..

I think you need to keep your mind on you math.