https://www.amazon.com/gp/product/B084DB2PCT/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1

^^Elbows

https://www.rei.com/product/171037/dakine-slayer-knee-pads

^^knees

I hardly even notice them, until I fall. Spent my first season on OW with just helmet and wrist guards. Second year i got knee and elbow pads and i could never go back to riding without them. It gives me so much more confidence knowing my entire leg or arm wont get shredded to bits if i go down. I work on pools all summer around chemicals, I spent half of the last season i didnt wear elbow/knee pads wearing spandex leg and arm sleeves because I was so cut and scabbed up lol

EDIT to add:

https://triple8.com/collections/wrist-guards/products/wristsaver-wrist-guards?variant=32225249525897

these are my wrist guards of choice