In the past few years, we have covered plenty of interesting clocks here. This Mechanical Clock Kit lets you build one on your own. It comes with 100 pieces and a full color manual to help you get started. You will need simple tools like sand paper and razor saw to get started.
The clock measures 13″ x 7″ with its largest wheel measuring 5.5″ in diameter. Costs $74.95 at this time.