Thank you! I am pretty happy with how it turned out as well!
I actually bought the dragon head decoration and other supplies at a local pet store, but I can tell you it is by Blue Ribbon Pet Products (specifically Exotic Environments product line). If you look up "Exotic Environments serpent head tomb ornament" or something similar, you should find it! Here it is on amazon: https://www.amazon.com/RIBBON-PRODUCTS-EE-5646-Environments-Serpent/dp/B0065KGJ68/.
Got it on Amazon, here's the link 👍. https://www.amazon.com/dp/B0065KGJ68/ref=cm_sw_r_sms_apa_i_u9dlEbV0CEWW6