I am SO happy that idea didn't fly at the time, because what came of it nearly 3 years later is WAY better than that.
When it was time to debut our check-out club, Brooke and I racked our brains for an hour coming up with a cool, though straightforward name. We both liked alliteration, so we were looking for a word that started with the same letter as "LEGO" without distracting from what the club was about. We both have graduate degrees AND other degrees in language-related fields and I mean WHAT WORD COULD WE EVEN USE THAT BEGINS WITH L TO DESCRIBE A LIBRARY PROGRAM.
Here's how the program went:
1. We pre-made small ziploc bags with three LEGO each in them. We started with a hundred and added more when we got low.
2. Every time there was a check-out (that we caught at self-check, or as they were leaving the room to check out at the big desk, or if they came up and asked about the club)we gave every child 4 and over a bag with 3 LEGO in it.
3. We guided them over to our "porthole", which is usually reserved for kids' collections, opened it up and let the kids add to the LEGO base or tower
Tying in STEM a little bit, avoid the possibility of having kids place LEGO in places that tip the tower over by saying "This needs to be a stable structure so it doesn't fall over. I know you'll find the best place for your LEGOs so they stay!" or something similarly fun/vocabulary enriching. They'll take their time finding the perfect spot!