I go on Polymarket and find things that would make me happy or optimistic about society and tech, and then bet a couple of dollars (of some shitcoin) against them.
e.g. OpenAI releasing an open weights model before September is trading at 81% at time of writing - https://polymarket.com/event/will-openai-release-an-open-sou...
Last month I was up about ten bucks because OpenAI wasn't open, the ceasefire wasn't a ceasefire, and the climate metrics got worse. You can't hedge away all the existential despair, but you can take the sting out of it.