Buy For Life - Find the most durable and sustainable products in the world
Brain Games - Boost memory power with free brain games
Greenlist - Start a sustainable company lifestyle, on Slack
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Hempies - 100% organic, super sustainable toilet paper
Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle