Well, my son had his "Hundred days" party finally at school. It was delayed a bit this year due to snow! Part of their celebration was to make a shirt at home that had 100 objects on it. They got to choose how to decorate it...paint, markers, stickers, or sewing on objects, etc. You know my son LOVES his Legos, so we had to incorporate that somehow.
It ended up being a pretty inexpensive project, just a little time consuming! I wasn't able to find any Lego related iron-ons, and my inkjet printer is running low, so making a transfer like the Star Wars rainbow shirt wan't going to work. We found some iron-on flock numbers by SEI on clearance for a couple bucks at Hobby Lobby. Now, the ones we got didn't have the outer white frame layer like this snapshot below, but you get the idea (I think they were clearanced because they're the "older style" from SEI).
I just used a small pair of scissors and cut the numbers up into little Lego like bricks. I also made some using a small (1/8 inch, I think?) hole punch to make it look like the bricks viewed from above. We were able to cut up a few extra "1"s and a "2" and get our hundred bricks of assorted styles and sizes. Then it was a simple job to iron them onto s $3 shirt from Hobby Lobby as well. Voila!