@halfpint1 You've gotten some very good advice here. I have blinds, too, and I open them every day so my cat can look outside. I have a table in the living room in front of a window that he can sit on. I recently put a hummingbird feeder outside that window. He loves to look at the hummingbird. In another room I have a cat tree for him in front of a window. I put a bird feeder outside that window for him. I have another hummingbird feeder outside my kitchen, and he watches the hummingbirds on it.
I buy lots of toys for him, and he loves to play. One that he particularly loves is his tower of tracks. You can order it from Amazon or buy it locally at PetSmart or PetCo. Here's a picture of it. My cat plays with it all the time. Whatever you do, please don't let him go outside. He could so easily be killed by a car or a coyote or even a hawk. If you must give him up, give him to a no-kill shelter. Do not advertise and just give him away. That could be awful for him.

The Bluebird Carries The Sky On His Back"
-Henry David Thoreau