I bought my daughter one from Tumble Trak too. It has a line for beam practice on one side and hand and feet placements for cartwheels on the other. It was simple and it makes her happy.
To update, the mat arrived yesterday. Dd immediately ran up to her room and put her leo on (inside out!) and was practicing handstands all night as well as some cartwheels. My boys are loving it too! Thanks for all your help!