Here is a list of Totem modules you can build using simple and readily available materials
Motor module – Various motors
Battery module – 9v battery
Double LED module – Two LEDs in series
Open circuit module – To be used as a switch with aluminum covered fingers, metal object, etc.
Manually: You can cut Totem bases using a rotative cutting blade. Foamwerk sell one that work well. It's relatively cheap, easy and can be done anywhere.
Laser cutter: You can also use a laser cutter. It'll allow you to cut more complex designs like the (beveled disc base or the connect square base. Of course check that you have proper ventilation and filtration for the fumes. The foam retract with heat: set your laser to a very low power and use several passes to cut the foam.
Mechanical cutter: Not Tested. Please help by testing with the beveled disc base and reporting here!