Seriously. Do it.
It doesn't matter if it's valuable or not (preferably one that is not valuable) :)
Just take that Mike Knuble OPC card from 2007-08 or that Benoit Brunet UD card from 1992-93 and crumple it up or tear it in half.
Too often, as collectors, we're consumed by carefully handling each card and placing it within plastic. We lose sight that it is a hobby, it's fun, and it's only cardboard. It's a weird feeling... but it's one that a lot of us really need to do.