Instructables user crowdsourced writes:

We had a nicely constructed, found, end-table with an aging surface, and I’ve wanted to do a broken tile mosaic for a long time. However, finding cheap or free (broken) tiles is nearly impossible. Called tile stores looking for broken or leftover pieces. Went to Menard’s; broken tiles are cataloged as write-offs. Searched online and found prebroken tiles by the pound = $$$. I was about to give up until there was a dominoes sale at Target. Who needs tiles? Dominoes are much more fun!

Great for a kid’s room (or with a kid’s help, for that matter)!