The bra thing doesn't interest me, although I did buy Smooth Away and Mighty MendIt. I also wanted to buy my daughter a BumpIt for her hair, and she just laughed.
The ShamWOW is great for certain things. I hand wash sweaters, but they take forever to dry. I roll the sweater up in the ShamWOW, just like in the infomercial, and it really does take a ton of water out. I don't know if it works any better than any other chamois, but it does work well.
We bought some Mighty Putty. It does work very well.