Make it dynamic. You handle leaflets, I'll create the software. Only all I got is a shitty laptop. But cool for starters.
Lol, let's do it.I'll make it as happy-sounding as possible.
"Join the communist bitpool TODAY!"
"Get YOUR FAIR SHARE of everything that is mined!"
"Help your neighbor when he's down, and he'll help you when you're down!"
"Donate a gigahash or three, and help people who don't have access to the kind of hardware you do!"
Etc, etc.
Heck, I'd pay a few bitcoins for well-designed Soviet-style posters with these slogans on them
EDIT: Will this do?
(NOTE: I didn't create it, don't pay me bitcoins)