The biggest prize for me was 5000 SATs I won by entering Stacker News. I've never been good at random stuff so I stay away from it. But 2 months ago when I started on SN there was a post offering 5000 SATs reward for explaining in a simple way a help to someone new to Bitcoin who wanted a non-custodial wallet.

I WAS NEW TO BITCOIN AND I RECENTLY HAD A NON-CUSTODIAL WALLET WITH THE CHANNEL OPEN AND READY. "PHOENIX"

So I explained how I did it and how I would help others do it. I got the prize. It was a reward for work and effort, it was PoW. Those are the best prizes for me.