I just use sheer will-power. Often times, if I get an electronic full of stickers, it was a hand-me-down that I'm only using because it's obsolete low-end hardware I'm using to test a game on. Since I'm not going to take it out into public or use it as a daily system, a lil left-over adhesive residue isn't going to hurt me.

Now, if there are stickers on an electronic that I bought myself? That's another story, probably involving a baseball bat or other blunt object targeted at whoever decided to break into my bedroom just to put stickers on my computer.