My kids and husband have enjoyed the Lowe's Build and Grow events over the last couple of years. They got an apron at the first one they attended and they get patches for each build they do. They have a really cute Valentine's Day one coming up. If your kids happen to be Monster Jam fans, as mine are, the one on 2/23 features the truck Grave Digger. They are FREE, you just need to register here.
It's good hands-on learning at the right price! I just registered my kids and thought I'd pass along the info.