Learn
Wanted:
Learn something you've always wanted to learn.
Say it:
Learn to say "hello" and "thank you" in a new language.
Podcast:
Listen to a podcast about an unfamiliar subject.
Preserve:
Look up some languages under threat of extinction and learn some words or phrases.
Video:
Find a video on YouTube and learn something new - a skill, a card game, a hobby. Whatever you like.
Salon:
Host or attend a salon where scientists, and others, give free public talks.
Read:
Read a newspaper article every day and create a response to them in your journal or blog.