i made them out of coro. i made my pattern on some 1/8'' hard board and transferred to the coro. i was able to get all 8 flakes out of one 4'x8' sheet of coro. they are around 24'' each. i just used a step bit and drilled out the holes so that the lights fit tight in the coro. the sheet of coro i got from a local sign shop for 12 bucks. there are 105 white and 50 blue