We're in the middle of September fundraising for Mefi, and cortex is still half-hippy, so vote with your $ because those scissors are not going to pay for themselves! Jessamyn is making sponsored posts every day this month (acquire your very own excellent certified Jess post right here), plus we're auctioning precious Mefi Blue chatfilter posts (#1, #2; see the current slate of chatfilter topics suggested, vote, and add your own topic ideas to the main thread), and we're still dreaming, so make any post on the blue about dreams or dreaming and tag it #dreamweek to add to the fun.
Great first post from needlegrrl, A good handwritten letter is a creative act celebrating April as (US) National Letter Writing Month.
Also see hippybear's Metatalk thread April Showers Bring May Flowers about posting "simply happy, joyous, silly, or positive posts" this month. (Also open to discussion for a May posting theme.)