I've been asked that a lot. The wood ATCs I use, both flat and dimensional, are so fun to use and can hold up to anything! I love them and recently stocked up on them. They are a UK company, but if you are in the US their shipping is super fast and their prices are easy to digest.
To make it easier for everyone who may want these, or to just check out the other super cool designs in their store, I've added a link on the left hand side of my blog page. Just look for the "Fernli Designs" logo, click on it and you'll be directed right to their store!
Have fun taking a look around!