I bought Manzanita perches. They're nice and easy to clean and come in various sizes. The ones I bought have a smoother texture, but they're sturdy and durable.
These were the ones I bought years ago, but I'm sure you can find them cheaper / in bigger bulk / in longer sections via a search on Amazon.

https://www.amazon.com/gp/product/B00XZMZFVE/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B0086YCPHI/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1