Twirl is a good place to get self-serve froyo and toppings. The caramel and nutella froyo are very good! They have a good topping selection and the clerk even offered to get me fresh toppings from the back when I told her I was gluten-intolerant to ensure that they hadn't had any other gluten-containing toppings dropped in the bins. I like that they have whipped cream available too. The only significant quibble I had was that the large table was a little too big for people who were trying to converse while sitting across from each other.