The RayV entity posted thusly:

Don't know anything about profile sanders but I nominate RotZip as the
most useless tool. Had mine 13 months, second time I used it, it
broke, surprisingly the company sent me a new one. Still couldn't find
much use for it. The last time I pulled it out it broke again. Wait,
I've used it three times, it must not be that useless.

I used mine quite a bit when tiling a wall. They work well for cutting
holes and funny shapes out of tiles. Other than that, yes.. useless.

RotoZip, not to be confused with a 'rotary tool' like a Dremel.