I set off on three year trip with an air bag. Seemed like a good idea at the time.
I tested it and all was well. It lifted one corner and didn't burst so may be useful. I wasn't sure what for but "everybody has one" and it didn't need much space or weight.
I stored it in the bottom of a tightly packed locker.
Must have deflated it on a cool day.
The residual air expanded in the hotter climate of my first country north of the equator.
It overcame the sikaflex and jacked the bottom out of the locker.
Jack and other contents have never been seen since.
I haven't replaced it. The floors in my lockers are now more firmly attached.
None of the jacks suggested so far would have helped when we fell off the road. Just the way I do things. Nothing by halves.
I have a normal size bottle jack which leaks and a scissor jack (from a Coaster bus). Plus miscellaneous bits of wood. The bottle jack probably leaks a bit more than it used to as I only had engine oil available when it first leaked and I really needed to use the jack. The scissor jack works at any angle and I needed it elsewhere.
I had one puncture in about 100,000 km. The long piece of pipe I use for undoing wheel nuts fits over the jack handle. Some day I'll invent something with a hinge in the middle.
I needed a couple of tall axle stands when I changed springs and replaced king pin bearing. Left the axle stands with mate in UK as payment for help and disposal of old springs. He still has the old springs and has no use for the axle stands. We still talk.
I've just purchased a hi lift jack to help take the box off the chassis. I'll probably buy some webbing so I can use it to jack up a wheel if the future need arises. I haven't figured out how to remove the wheel from the vehicle once jacked up. I'm sure there's a way. Maybe I'll put the recovery tracks under the wheel.
Haven't seen the jack yet. Aus Post seem to have lost it ................ the tracking number seems to be just for collection of a delivery signature and their help seems to consist of waiting and hoping until sender asks. Their feedback page had a "Sorry. We have a technical problem. Please try again".
I guess I'm trying to say I haven't had much luck with jacks .............