I've been searching for mini, tiny, itty-bitty little d20's on the interwebs and they (apparently) do not exist.
I'm bummed because years ago I owned two -- but now they are long gone.
Anyway, I wanted them to put into a tiny little clear plastic box as a handy-dandy DM's randomizer. I was planning to put them in the box with a few little 5mm d6's that I got from the Pirates CCG.
That way, I'd just pick up this $0.77 box from Hobby Lobby and shake it -- instant results without the need for a DM's screen.
I already had this box in the works when I read this post about an Arnesonian chart. Perfect timing - this is just the table I need.
I like the % version, but I'd prefer it as results on a d20. Presto! Here you go if you are interested.
I've printed it small and I've tucked it into the bottom of the box. Now I just calculate the needed "to hit" number after AC and bonuses/penalties, then shake the little box to roll 2d6.
I've also got 4d6 in the box for quick attribute generation. Here's a movie I recorded from my gaming lair.