I have a couple of foam kneel boards, but I never kneel for anything. Knees protest and groan and gripe for hours afterwards.LOL
My main garden patches next to the patio are behind a retaining wall. So I just stand and tend to the garden from that side, or sit on the retaining wall. The other beds, I have a light weight 4 gallon pot that I use. A couple of the beds have a bunch big round logs that are just the right height for sitting.
Since my lower back is the pits, if I need to do something low outside, it’s much better that I sit or kneel. Inside is the worst for kneeling since I have a wood floor and my knees can’t take that at all, not even once. I’ll be keeping this thing inside to use and taking it outside when I go out there. Dealing with the grow lamp on the floor will be much easier with this seat/kneeler.