I spend a lot of time working on creating and running various websites, developing open source projects, and running Telegram bots.
Some of my projects include:
https://multiupload.us - A tool for furry artists to upload their content to many sites at once
https://github.com/go-telegram-bot-api/telegram-bot-api - A Golang library for working with the Telegram Bot API
Donations go towards the server infrastructure that runs all these sites. It costs over $400 a year to maintain the servers, domain names, etc. that run these sites.
You can find my open source projects on GitHub at https://github.com/Syfaro or my own Gogs instance at https://git.huefox.com