Practicing in 3 feet of slow

MR3000,
I’m convinced you will figure out a way because ”Necessity is the mother of invention” and ”Where there’s a will there’s a way.”

All you need is some space. There may be another person’s garage or maybe your own garage has enough if you moving things around or maybe a garage sale would free up some space. There are a variety of options that most don’t consider. Check with your local churches too. Most churches around here have gyms and some even have weight rooms and exercise area. I know some players would rent 15 minutes at the indoor batting cages and spend an hour in some of the “common” areas throwing grounders to each other and just playing “catch”.
Don’t rule out your college. While it appears to you the gym is always full, that may not be the case. Go to the school administration and express your desires. Maybe they can give you a suggestion. While you may not be a pitcher, you may want to practice your throwing much like a pitcher. All the space you require is something like a deserted hallway in the school. I have heard of some businesses in this area that have ties to youth baseball that have opened their warehouses to players for winter workouts. Think!
Fungo

Is there enough room in you garage to play "wall ball" with a tennis ball?

In my day, we switched to playing catch with a football. Though the technique is slightly different in the throw and catch, the hand eye coordination are similar.

I often use the football analogy when teaching players how to catch fly balls going back and figuring the trajectory of the ball.

Actually a couple days ago I just happened to notice a schedule posted on one of the walls that shows what classes are in the gym at what time and what periods are free for people to use. SO this term I can bring a rubber ball and bounce it off the wall. I might even bring my tee and some whiffle balls and ask the athletic director to keep it in his office or store it somewhere where no one can steal it.

Lean your mattress aginst the wall and throw into that.Not much good for accuracy but you will at least be working the arm and shoulder.

I love seeing that mattress angle. Reminds me of playing in the vacant lots in the Bronx and finding uses for whatever was around.

The mattress back stop is in a class with the refigerator door sled. Both work.

If I had 3 feet, I'd be slow, too.

Seriously, though, some online places sell these little balls that are like one large ball made out of a pattern of smaller balls and all turned out in very bouncy rubber. The one I have is called a 'Crazy Ball'. Those things are great for small-space reaction drills, keeping the butt down, and staying cat-like on your feet. They have some wicked bounces due to their shape.

As for throwing, you could go online and find some Thera-band tubing, handles, and a door anchor (probably black-level for your age) and find some tubing drills on the web. It's called winter Pre-hab, and your arm will thank you!!

I grew up in Michigan, so I feel your freeze!!

Hang a painters tarp (canvas not vinyl) from the rafters in your garage, paint a target on it and throw into it from as close as 5 ft.

You can at least work on arm strength and on days its a little warmer you can back up and throw a little longer distances.

You can also hit into it.

Do you have a basement in your house? You can from a rafter in your basement instead and that works well. My sons dis that all winter long.