First, I'm not suggesting anyone's doing anything wrong/improper; you all know your BDs better than anyone. I'd just like to relate a little anecdote, FWIW.
[Confession}
Back before we got a cat, we discussed it with our veterinarian (as I've also recently done before getting a BD). After a few routine questions about why we wanted a cat, etc., his advice was to make it an indoor-only cat, i.e. not let it outside to prevent all the possible outdoor hazards (cat fights, traffic, unfriendly dogs & humans, accidental poisoning, other diseases, etc. etc.) Note: This too was a personal decision; other cat-owners may have differing views, and that's fine. Anyhoo, things went along fine for the first 1-2 years. Then, being young, dumb, etc., I thought I'd try taking her out--supervised. She'd sit on my shoulders, wrapped around my neck, while I walked around the neighborhood.
This was a dumbass thing to do. Whilst I thought kittie enjoyed being outside experiencing the world, she was--in fact--agoraphobic, and I was too naïve to recognize it. Once I did, I never put her though that again.
[/Confession]
What's this to do with BDs? Whatever you try with your BD to "enrich" them, PLEASE be vigilant, and watch carefully for signs of stress. That's all. We all want them safe, happy, and long-lived.
If you're not (yet) aware of all the signs/symptoms, google: bearded dragon signs of stress or search the archives here.
Thanks