Prefer to pick out my own driftwood & such...I'd hesitate to "order & let them pick" too. I like cork-bark also.

I use natural branches donated from my trees, & install them diagonally so they intersect & lock together (I have strong climbers, rat snakes).

You can also get some bamboo poles* (often sold for gardening supplies) & fasten them together with rope or even zip ties (or both: disguise the zip ties w/ rope for best
appearance) to make a wide "ladder" that fits angled in the tank. Even heavy-bodied snakes like to climb on them, they can loop thru & hang on easily. *if you can't find
bamboo, you can use wood too, either dowels or regular 1x1" wood, or even branches. For better long-term use, coat them with no-VOC water-proofing- easier to clean .