I keep this in the trunk. https://www.amazon.com/gp/product/B01FJ4TI40/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Portable trolly jacks are a life saver, and can be had for pretty damn cheap. Amazon has this one for like $60
Pro-LifT F-2315PE Grey Hydraulic... https://www.amazon.com/dp/B01FJ4TI40?ref=ppx_pop_mob_ap_share
Would a small floor Jack work? https://www.amazon.com/dp/B01FJ4TI40/ref=cm_sw_r_cp_api_glt_fabc_DB825T4KFTPW02ZGZCBG?_encoding=UTF8&psc=1
I bought this jack. Nice and neat and comes in it’s own plastic case to keep it in the trailer.
Pro-LifT F-2315PE Grey Hydraulic... https://www.amazon.com/dp/B01FJ4TI40?ref=ppx_pop_mob_ap_share
Go to your local auto parts store and get a small floor tack, like this one at amazon For what to carry here is a youtube. It a bit overkill IMO.