Pick up this months issue of Guitar World magazine, the Tech Education article has a mention of the 3M stuff the pros use and where to get it. I left mine at work and I'm out of town for the week, so I can't post it for you - but that's where you'll find the good stuffage.
The stuff that Matt from Guitar World was talking about is 3M Dual Lock - and it's like $60-125 a roll. You might try Home Depot or some hardware store to see if you can get less than the 100 footer roll. They also sell it as Scotch brandin smaller strips, although Matt recommends at least a couple strips of 1" width per small pedal.