I bought mine online at Etsy. One of our other members here walkingwithdragons has an Etsy store and she makes and sells them for like $5
Depending on the size of your beardie you may also be able to find something in the small animal section of the petstore like something for a ferret.
You're welcome! At first Luci didn't like it but now he realizes it means he's going somewhere fun so he's better with it.