Tabletop RPG GM Helpers

I run D&D games at conventions and meet lots of new people, and I have trouble keeping track of which mini belongs to which player when we're using a battlemat. So, I made saucers that fit minis with 1" and 2" round bases, and holders for index cards to use as table tents. Now I can quickly tell which player runs the character I'm about to attack by matching the color of the mini's saucer to the color of the player's card holder.

There are card holders for full and half-size index cards (3"x5" and 3"x2.5", respectively) in both vertical and horizontal orientation. Several index cards will fit in each older, so you can keep lots of notes handy and pull out what you need.

(The map in the photo is from Dyson's Dodecahedron. I made the coat of arms in an online heraldry designer.)