Thrift stores have piles and piles of Legos. I've seen various small stores around that sell Legos in bulk. They'll have huge bins, and you can buy them by the

Thrift stores have piles and piles of Legos. I've seen various small stores around that sell Legos in bulk. They'll have huge bins, and you can buy them by the pound. I used to buy a few official Lego sets back in the day, but also I would buy the big bucket of generic blocks. They were cheap and gave you a huge stockpile.