I've wanted to make some sort of lacing cards for a couple years now, either out of wood or laminated shapes. I finally opted for the laminated style. I designed number cards and printed them on 4x6 photo paper, then laminated them.
I didn't have a hole punch to reach all the way in around the numbers, so I used the old school "eyelet setter" (the 4mm size). It wasn't as fast or clean as a hole punch would have been, but it got the desired effect. The shoe laces I got are too long, but they work. I keep these in my church bag to help keep the kids calm on Sundays.