Thanks for the additional explanations. I though the scale was a fair bit larger than it is. ...penny size holes.
somebody come up with a use for all those cool circles I cut out and I will mail them to you free...
Challenge accepted.
1/ Doors set into the sides of blue foam hills (to represent Halfling Burrows). ‘Carve’ a plank pattern into them with a ballpoint pen.
2/ Texture insets for circular, lipped bases. Texture the foam first (either by rolling a rock on it to impart that texture -or- ballpoint pen again to make cobblestones). Drop it in the base.
3/ Iris doors for a SyFy setting. Add seams with ballpoint pen.
4/ Routed, Shaken, Wounded, etc. markers. Foam goes inside a Reaper 20 or 25mm RPG base (the straight sided ones) carve appropriate symbol/numbers and paint to taste.