Trader Joes = Disneyworld. Only better.
I bought gifts, of course, but after realizing that everything there is cheaper than at my local grocery stores, I also bought:
goat yogurt (two pounds for four dollars! my local co-op sells 6 oz. cups for $2.00!)
0% Greek yogurt
white balsamic vinegar
I would've done more damage, but I simply couldn't carry anymore (I was shopping in Georgetown, D.C. - I live three hours away).