Good climbing/basking branches for a red tail?

[red_tail_ale]

I've never striven to have an aesthetically pleasing enclosure. It sits in my bedroom and is only shown off to other snake lovers. There is a hide on both cool and hot sides, a basking ledge and a pool, but there aren't any plants or decals on the inside.

I'm curious, though. Boas are climbing snakes, and my boa especially likes to climb. However, the perches don't allow her to get a good grip. I'm thinking about finding some kind of branch to make moving to/from her basking perch easier, as well as allow her a branch to bask on.

So what kinds of branches can and can't I use? There are plenty of branches in my area that could support her weight and give her something to coil on, but I don't know how to go about doing so. Would I need to de-bark or sand the branch? Would I need to bake it to kill any parasites? Are there types of wood that could potentially make her sick?