Seating chart printed at Staples

You could probably get some decent poster board at the Dollar Store.

Or you could try Michaels or Staples, but they'll definitely be more expensive.

I'd say go the dollar store route, too. If not, walmart has them. It'll work out!

I was just there yesterday. If you select the "poster" option, it should be the thicker board. I'm doing the same for our "unplugged" sign. I'd do it soon though because it seemed like the posters aren't something they do in store so it could take a few days.

I'd just put it in a large photo frame with a stand (you can get 18x24 from Michaels for like $60). I ordered mine on etsy and that is what I planned on doing.