One of the simple details that I really enjoyed designing for my son's bar mitzvah party were these simple signs. The pomegranite logo (which included his hebrew initials) was designed initially for the invitation, and I was happy to use it again for a few details for the party. The signs in the foreground says "shana tovah v'metuka" means have a happy sweet new year, surely appropriate for the sweets table laden with goodies that my daughter baked over eh period of a few weeks. And the sign in the background says "broochim habaim" which means welcome!
If you have a color printer and some software that enables you to design simple signs, then this is for you!