To the OP, I would suggest trying to make your own implements. If you can keep them in your garage do that. I would also consider purchasing some stones, or perhaps making your own. It isnt hard and it doesnt have to be perfect. I have a friend who made a yoke with some pipes. It emulates the feeling of being in a yoke. It isnt exactly the same, but your CNS gets used to it. Farmer walks are easy too.
Atlas Stone: How to make an cheap Atlas Stone – DIY Atlas Stones Tutorial - YouTube
Farmer Walks: Use some heavy chains and attach some plates. I’ve done this with duct tape to make a handle. I have also used 90-140 pounds for each chain.
Yoke (this is the one my friend helped build): Homemade Strongman Yoke - YouTube
Buy a heavy duty wheelbarrow and move it.
I made these for my clients because I dont have money to piss away in my facility.
If this doesnt improve your conditioning, you’re not working hard enough.