I like the shelters Carmy made, they should last a few years by the looks of this one.
This new guy sure looks content, and at home. I hope he is able to push a little harder on the heartstrings, and become a permanent resident.
Maybe something to think about Marko is to build a kitty condo. This would allow him out into the backyard, and he wouldn't be wandering the streets getting into fights. Something else that might work if you people have the time is to train him on a leash and take him walking for his safety, and your peace of mind.
Peaches! I think that's a neat name, it suits his colouring. Now you will just have to find cream to keep him company.