I was wondering if there was a way to turn the reunion page (for purchasing tickets) into a store front for a time for classmates to purchase items from the reunion?

If you changed your description and only turned on the items for sale I suppose you could do that. Although you'd still have to put the items under your reunion link.

Well into next year we'll be working on a store module, but that's so far from now I don't even wanna give any specifics on the store yet.

Another thing you might consider doing in the meantime is opening an eBay store and directing your visitors there. It's cheap and easy and a great way to sell your wares.