I constructed these counters using nothing more than the vague idea of having a wheel-type counter that could go up to 99 (without having a bunch of tiny numbers on one wheel). They were designed in Photoshop using a lot of printing, measuring, and cutting.

If there’s enough interest, perhaps I’ll post the pattern.

Counters
Materials: Heavy cardstock, two brads each, clear packing tape
Created with: Photoshop, Printer, Xacto knife, scissors

Time:
Engineering: about 3 hours [and lots of paper scraps :)]
Creation of each counter: about 15 minutes

–To date, I’ve made about 13-15 counters