You might get the best thank-you gift ever out of it: cake.
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A shiny copper baking set that includes all the basic prep tools you could ever need.
The gift set includes three mixing bowls, a set of measuring cups, a whisk, and measuring spoons — it's almost $30 cheaper to buy the set than to get everything individually. Get it for $87.97 here.
A rotating cake stand that makes frosting a cake ten times easier, with a set of cake circles to go with it.
This particular cake stand is great for regular two-layer cakes; if they have a tendency to bake anything bigger, consider a pricier but more durable stand like this one.