There are a lot of improvements but I manage to live without them.
I feel like I am extremely fortunate to have what I have. When I started, I never imagined I would work up to nice lenses. That Lens Baby looks like fun. I saw a war photo I'm sure was done with it or comparable. The effect could have been done in PS though.
I've had to learn to live without a lot of things and my car is getting very old but until it's like you say, I keep it maintained and still drive it because it's so economical. Seriously, if it goes, I don't know if I could afford a decent car like people drive now, cost more than my house. My son showed up with a hybrid something (big and white) because what he had was only getting 6 mpg.