This task...

I'm currently thinking, "what have I gotten myself into?!" but in a good way. My hubby is going to kill me but I have been put in charge of decorating the facility hall for my 10 year reunion next month. I'm very excited and definitely up for the challenge but on the other hand, I don't have a whole lot of time to get it all thought out. I'm seeking the advice of the creative! I am pretty artsy myself BUT two heads are always better than one. I'm posting a picture I found of a decorated reunion hall--in our school colors, too--which I think is simple but nice (right now I don't think there's a lot of money to work with). My main concern is going to be centerpieces. Suggestions and ideas are always welcome!