Need some ideas

Since I'm pregnant and my midwife has advised against riding, I'm not.
I would like to keep them in somewhat decent shape so they don't all just turn into flab.
I would prefer to do stuff at a distance (I plan to long line and longe them) just because i'm super nervous something is going to happen to me and baby.
What are some things I can do with them (just Vega a 6 year old app mare and Gem a 10 year old app gelding and Montana until he's sold)
I would love to do some desensitizing stuff, but aren't like all of them close distance things?

I do have access to a blue tarp, jumps, ground poles and barrels.

Low impact stuff for me would be great!
Thanks!

Teach them to line drive. Low impact and very useful, western or english.

Is line driving like long lining?

Very much but I personally like to work with shorter driving lines and teach the horse more advanced movements like half pass, shoulder ins etc.

But it starts with the longer line. If you trust your horse you can go shorter. This will keep him active and in shape.

I will definitely see how close I want to get. They haven't been worked in a while and all they do is eat so they have tons of energy stored away.

Oh I think i'm set on stuff to do! Thanks Spyder!!

Lots of ground work...I love round pen work, so if you have one, perhaps this would be a good time to practice some round penning techniques with them, especially off lead stuff.

If you don't have a round pen, a longe line will do too, as you can always work with a syrcingle, and draw reins to help keep them supple.

Doing lots of desensitization things with them using what ever you can find could be fun too, except you will have to be careful with quick movements.

Right now, I would just spend time with them grooming them, taking them for walks, longing, etc...whatever you can do comfortably, without getting the horses too goofy for you to handle, especially later in pregnancy. ;)