In all, the project took approximately 5 hours and cost about 10 bucks (considering the belts were free, so the only cost was the pen kit and adhesives).
Leather (from belts, shoes, or anything, really.
Cyanoacrylate - NOTE: Cyanoacrylate (CA) is dangerous not just because it bonds skin, but it also reacts violently with cotton (ie bursts into flames). Do not let it touch your skin, clothes, paper towels, etc.
Pen kit (available at specialty woodturning/woodworking stores and catalogs - I used a 7mm twist mechanism kit)
Linseed oil - resin finishing mixture
Scalpel or razor
Power drill/drill press with appropriate size bit and pen mill/reamer
Mandrel and bushings of appropriate size
Woodturning tools (I used a 1/2 inch spindle gouge and a 1 inch rounded skew)
Sandpaper (150-220) and nylon sanding pads
Mallet and spare bushings (potentially)