Thermarest Sit Pad

+1

Or a kneeling pad at the garden center for even less.

or “Set of 4 – Foam Kneeling Pads Garden Knee Mat” on Amazon for $7.51 for four with free shipping.

No pockets to hold snow or water.

I’ve used them as sit pads, stadium seats during high-school meets, standing pads (yeah, it helps in the snow while watching a ski meet), and padding for minimalist day packs.  On tropical vacations, I’ve tucked one under my rash guard for a little more buoyancy while snorkeling.

“I promptly cut into two pieces” – you could cut each of those in half and, you know, “turn the other cheek”.

https://backpackinglight.com/forums/topic/77247/

Eric-

Are you referring to the Z-seat?:

http://amzn.to/2ajUx3J

I use this as well, cut in half.  I clip the corners on the 1/2 and it replaces the 1/8″ thick back pad in my EH Kalais.

I didn’t care for how the Z seat folds down, and prefer my chopped ZLite small, which was big enough to make two. Width(length, as stored) was cut to fit the mesh pocket on the rear of my Exos packs, with room on either side for rain gear, water filtration, etc.