Years ago, I had to do a small electrical service call for a guy who's house I had wired when it was built. It was on a Friday, on my way home and only took me about 15 minutes. Could have charged him $100, at the time, but I told him no charge. He thanked me then asked if I liked fire works. We go out to his garage and it is filled floor to ceiling!
Some company from WI (fireworks are illegal to sell in MN) would ship this stuff to him in bulk. He and his wife would divide it up into various packages with a little bit of everything in each one, then ship it back.
He must have given me $200 worth of shit for free! My kids were maybe 7 and 9, at the time, and loved when we went out to my brother in law farmer's property and spent the night shooting it all off.