As far as securing stuff in the cab I decided to go with some cargo net I had from my former Jeep Wrangler.
I looped one strap around the back of the drivers and passengers seat base
and then took a large carabiner and hooked it though the rear seat belt attachment on both sides
The loose rear corner strap of the net is looped through the carabiner and attached somewhere inboard of the net with another carabiner to secure and tension it.
This set up probably wouldn't keep everything totally secure in a full on roll over, my attachments probably aren't strong enough for that, but it's a starting point using stuff I already had laying around. The commercial cargo nets I listed earlier are probably a better bet.
Edited by slash2, 30 November 2019 - 06:11 PM.