Use a damp moss hide box. Provides a nice damp humid location in the cage.....
I use a sterilite 1754 sweaterbox for my damp moss boxes. I cut two access holes. Note the holes are "U"
shaped so if multiple sections of snake are going through at same time, it can lift the lid if necessary.
I had two kinda stuck one time with a round hole. One had it's body going both in and out while a second also
was going in one direction for a total of three body widths at the same time. They probably woulda been fine
and worked it out on their own but I didn't like it so I opened the top of the holes to the current "U" shape.

With the top removed you can see the green moss and the "U" shaped holes in the sides. I only use an inch of
green moss but it does expand to about two inches when damp.

Pulled up the corner of the moss to show the layer of peat moss
underneath. This serves two purposes, adds mass for water and heat retention and provides a bit of drainage
for when they urinate. They will urinate and deficate in the box. I pull the solids and replace the entire
contents about monthly give or take depending on circumstances. For example, they will go longer between
changes right now with no food intake.

Of course you can use a smaller plastic container for a smaller BRB!!!
-----
Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
26.49 BRB
20.21 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

