a combination ashtray and whiskey glass coaster. i have a friend cut leather circles for coasters on the ones i make.
ideally you'd run this with a quarter inch bit for roughing and profiling, then maybe finish with a bowl bit in a handheld router for the ashtray.
Materials:
Bamboo, Cherry Plywood
Machine Type:
Lead CNC 1010
Notes:
you'll want a piece of stock at least an inch thick. first you'll route out step one using a bowl and tray bit, then you'll run step two with a 1/4 bit to profile the coaster and cut the tray out.