I have two things:
You know the little plastic letter openers with the little blade in them that people/companies used to give away? They are great for cutting sandpaper -- just fold, crease and slit it with the letter opener.
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Three-ring binders. Everyone has some of them, with different size loops for differing amounts of paperwork to be held in the binder (e.g., 1", 2", 3", etc.). Don't throw them away when the covers wear out. Open them up flat, drill out the two 'pop rivets' that hold the ring assembly to the binder, freeing the ring assembly. Now throw the binder cover away (or recycle it if possible). Mount the ring assembly to a board with a couple short screws, then mount the board on the wall in your shop. They make great places to hang all those little blister-pack cards, as well as keys, small tools, etc. I probably have eight or ten of them scattered around the shop holding al sorts of little things. And it's easy to see what's hanging on each one!
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Don't let it bring you down,
It's only castles burning,
Just find someone who's turning,
And you will come around
Neil Young (with a little bit of emphasis added by me)
Board member, Gulf Coast Woodturners Association