Lending BTC and swapping between ETH and SUSHI etc. Was lucky with some pre-sales rounds but most gains came from BTC. Sold all my stocks and went all in BTC in April. Paid off rather well.
I bought in at the low in March, but was playing with it and didn't just let it ride and hodl. Still got a solid amount of the rise.
I plan to take 50% out by December, but honestly can't think of anything more valuable than BTC or ETH at the moment. Maybe India ETF.