Spiky Stim Tool

My wife showed me an “ouchie” thing the other day that she said she would like and that I have a 3d printer, could I print her one? We had a look on makerworld but all the ones we saw were straight sided and she wanted curved sides. I thought I can do that and fired up fusion. More hours that I'd like later (I'd forgotten how much curves complicate things) I came up with this. Its 70mm high. 30mm wide in the middle and narrows to 22mm at the ends. I've been asked for a keychain version so have uploaded a new model (here) that is designed to have an eye screw in one end. This model is customisable for size and eye screw dimensions. Edit - Don't stand on it if it's been dropped on the floor. It makes a particular danish company's building blocks seem like a dream, and it rolls so you get a large area of foot.F*@$£&g thing!