Keeping a hatchling happy in a large enclosure.

[Godzilla78]

No need to keep a hatching in a tiny tub for security. Just give them multiple hides to CHOOSE from. A smaller enclosure is not better, because it gives the snake LESS choices for thermoregulation, potty spots, and exercise. This a rack shelf tub enclosure I pulled out of the rack, to play a little game and demonstrate how to keep a tiny ball python in a larger enclosure. This tub is a 56 quart HOMZ underbed storage tub, with ventilation holes, a 30" x24" floor plan and 5" high walls. Currently I keep all different size/age ball pythons in these size tubs, which are larger than the typical 41 quart, or the CB70 size storage tubs, popularly used in rack shelves for adult ball pythons.
ALL of the tubs ahem hides, since they are large. The hatchling has a bunch of tiny ones. The subadult has 2 medium hides, the huge 2600 gram female has 2 large hides.

This is a cute video I made, called GUESS THE SNAKE HIDE! In the video you can see that under each hide, there is a small burrow where my Killer Piebald ball python hatchling "Chuck Norris" has bedded. The large hide is commonly used, it is large enough to have a bed on the hot spot, and a bed on the cool side. The other 2 hides are smaller, they have 2 opening and 2 "caves" cut into tiny Tupperware. He was very, very small when I got him and used to use the smaller sides sometimes, he is much bigger now and only uses the larger side of the dual/split hides. He uses every one of them at any given time, depending on thermoregulation and if he recently went potty in or near one of the hides.

Chuck has never had any security issues, or feeding issues since I first purchased him from Justin Kobylka Reptiles, back when he was a wee one, only a couple of months old. He has his little hides, which are just as good, if not better than a tiny tub enclosure, for security.