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My dremel set up is much more basic; cordless B&D rotary tool (2 speed) w/ a adjustable chuck, which is a great accessory. You can use any diameter shaft from a needle to 1/8"; L-bracket straightened (smallest diameter long wood screw I could find) and emery board.
I use the steel shaft from an automatic umbrellas as a cutter, you can make it long enought to hold several bodies at time and then push them out with a solid shaft. I also have a large diameter plug cutter I fabricated from a piece of thin wall conduit, wood core and 1/4" bolt. Rotary plug cutter work much better than any punches to which I have had access. I have cutters from approx. 1/16" to >1/2" made from biospy needles, ball point pen refills (brass variety), spokes from wheelcovers, umbrella shafts; metal pen cases. If it's round, metal and will fit in a drill it has potential.
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Popper supplies
Best thick closed cell foam (nothing else is close really) is sold in squares 5/8" thick at softtiles.com.
Best punches are hollow punches from harborfreight.com with 9 sizes for $6.
You can super glue layers of thick foam or foam sheets (best prices are at Hobby Lobby) and make permanent color combinations.
Please see the info I put on the foam plug thread.