Very simple to make. I chose not to drill into the dominoes even though I have tried it as well. I made three necklaces, 2 pins and 1 hair clip.. Note: make sure that the pin mechanics work because one of them didn't work or was glued in the process. Not too sure.
I have been at this the last few days. The time is just a guess. I have about 30 dominoes or so finished and waiting to be turned into something at the moment. These are just a few of them :D