Tealight Fire for Cauldron Sprout Potion Playset

My girls love the Sprout Potion Play set and after having just bought several electric tealights for other decorations, I thought it would be awesome to be able to light a fire under the cauldron.    I have printed it both smooth and with fuzzy walls. Fuzzy looks great and gives it a more wood-like appearance, would be great for decoration. For playing with (with water, mud and who knows what else) I am afraid it won't dry and clean well enough for my kids to play with it long-term so I'm sticking with smooth. It's my first design and there is definitely room for improvement so feel free to share your suggestions and/or remixes!