I don't have a Cricuit (hint hint husband!) so I use Thickers from American Crafts. (Having a MIL who works for them pays off! I get free craft supplies all the time. Bonus!) The awesome thing about Thickers is you can spray acrylic over them and they still look great! (Even the glittery ones still sparkled!)
Also it's important to note.....drilling holes in wood only works when the drill is not set on 'reverse'. Although I actually DID get one hole in on reverse, I completely broke the drill bit into 4 pieces. Sorry honey!!