Have you tried Toastmasters? Yes there is a large part about public speaking but meetings also have dedicated improvisations.
You could even work on areas of public speaking you didn't even know you might want to improve.
Trying to bulk up has me ingesting whey protein daily 90% to fill up. Even when cutting down you gotta take even more. One way or another it ends up in a shake or on few occasions, some nice recipes. Can't do better on a budget.
Seems like the kind of thing that could be rented out like those carpet/sofa cleaners. Except it's probably too costly of a gadget to trust a layman to handle with care?
I'm really only interested in GoW so I can give it to my brother. He's a dad of 2 and needs some quality games in his backlog.