you can get a faun to put them in - large ones are the right size for hatchlings, or you could use an 18L rub - they are very similar in dimensions to the fauns but you will need to put air holes and the like in yourself
2.0 Normal Royal Pythons - Q and Little One 1.0 Chihauhaun Mountain Kingsnake - Simba
Heres the main site: http://www.reallyusefulproducts.co.uk/uk/ or you can purchase them in staples, they do rubs if you want to go and see the actual sizes of them. As Hannah said a large faun is almost excellent for a hatchling although they are much weaker than a RUB and can crack easy,