If the mini laptop mouse you’ve been using just isn’t portable enough, then you should look into picking up the Jelly Click. It’s the first mouse that fully deflates and folds up so that you can carry it anywhere. All the electronic circuity lives on a small flexible board. The body itself is just soft plastic. Whenever you need a mouse, blow up the Jelly Click, attach the USB cable and you’re good to go. It’s just the kind of useless gadget that I could really go for.