Go to an auto store and buy you a trolley jack. Basically small version of a floor jack but some come with a nice storage and carrying case so it’ll be easy to put in the van and use. Gonna weigh about 15-20 lbs. easiest to use. Bottle jacks, scissor jacks are not to complicated to use, weigh less, but are not as safe and the risk of jack failure is higher over a trolley jack. Coupled with a jack stand it’s about as safe, sturdy and simple as you could ask for. Here’s a link to what autozone has. Put same one in wifes car so she can change a tire with out help. If I were you I would also buy a battery powered impact so you are not dealing with a lug wrench. If you have lift limitations using a lug wrench is gonna be difficult for you.
Something like this could be a better option for you. I’ve heard good things.
The scissor jack Thumpy posted looks interesting. It doesn't look like you can use it manually if the motor fails, which I don't like.
Another option to consider (in addition to the jack), is getting a AAA membership. The cost of annual membership (which includes a lot of services. look it up) is often less than the cost of one tow bill.
