Invitation Card IDEASS?

Okay people, I need IDEAS HUGE IDEAS! I'm throwing a onedish/potluck party this saturday and i need to make about 15 handmade cards to hand out to my friends. Now HANDMADE means nothing hard, no printer usage, just something creative and new and trendy n cool, that i can make at home. For instance would you guys mention what i should write in the card. Date? Name? Time? Place? RSVP? what else?? put in some fun sayings k? Dont make it too complicated and dont hurt yourself it just has to be simple! Have fun helpin me out! Plz and Thank YOUUU!