@George,
For starters, I’m picking the Vikes. Assuming, your picking the Rams, we could have a side-bet of making the reward for winning the bet would be a craft item. I do photos…images of nature photo (safari animals) or something like that. (You’d pick from an online gallery of my images).
Or, if you don’t do crafts, something that’ll be hand-made and small. Just a thought.
Hmmm….even easier a low cost gift card…to Amazon or a local chain?