The following four things are listed because I have personally seen the positive impacts they have had on people and I want to bring those positive impacts to those that are incarcerated.
As a proponent and activist for food security in the US for the past decade or so, I have always thought that every jail and prison should have a garden. This garden would be used for therapy and to grow food for both the prison and for local food shelters. I have seen firsthand the positive impacts urban farms (DC Urban Greens in SE Washington, DC) have had on communities and I know that this would help some people in jails/prisons. I also know that some prisons are taking on such efforts, and have been doing so for years (NPR Article).
As a teacher that has taught programming/coding for years, I know these skills can empower people and give them financial freedom (with or without a degree). Inmates leaving jail/prison with programming skills will be much better off than those without. Especially specific certifications such as in IT fields, this would be a huge benefit.
Library (actual books)
Yes, physical books still have a place in our world.
Tool Training Shop/Maker-space
I wanted to initially leave this section as just a tool shop but I know there are other valuable skills to teach as well. In addition to learning how to use a table saw or power drill we can move on to teach inmates how to operate an laser cutter, lathe, or 3D printer. These are modern day skills that will benefit them in multiple settings.
I know many prisons seems to complain about costs of housing inmates but let’s look at the four additions listed above as ways to help get these inmates out. Hence, less costs in the long run for these complaining cops and wardens.