Invitation
No need to buy invitations! Simply send your old friends a beautiful evite. Many websites offer lovely housewarming-themed designs. Some are free, while others may be purchased for a nominal amount. As for the neighbors, why not make a postcard from a scanned photo of your new home? Add some clever graphics and have them printed with a border like a postcard. Handwrite the specifics on the back and just drop them in your neighbor’s mailboxes.