Can you make a whole bunch of bandana's?

Do you have a Dollar Store? You could buy toys for $1 each and put a bow on them and hand them out.

How many favors are you talking about? 50? 100? And how much are you looking to spend?

If you went to BJ's or Sam's Club you could buy a huge box of treats and then make little treat bags for the pups. Just put about 3-4 treats in a little bag and tie the bag with ribbon.

That's nice of you to want to make the favors. Good luck and keep us posted on what you decide to do. Perhaps you can take pictures of the event. Will Beenie & Frankie be there?