I use a hydrofarm thermostat. Not the absolute best on the market, but gets the job done. A thermostat is necessary; when UTHs fail, they fail 'on' and get extremely hot. They can get up to 120 even when they're functioning properly. Without a thermostat you could easily end up looking at a burn.

Another thing to look into is some fake plants from a craft store to just kind of leave on the bottom of the tub. My BP seems to appreciate the extra cover and will spend quite a bit of time outside 'hiding' under the leaves. Not necessary, but you'll probably see more of the snake that way.

idk if you have other reptiles, so you may already have a first aid kit, but that's always a good idea. Mine includes Chlorhexidine (at CVS under brand name Hibiclens), Betadine, painkiller-free Neosporin (it's important to get the kind with NO painkiller), and really crappy Q-tips (the less soft they are the easier it is to apply meds with them). Even with spot-on husbandry, you're going to need those things at some point so they're just better to have around.