All of programmerdudes examples are different modes of consumption. In my experience the most fulfilling hobbies are those where you create something. It really doesn't matter what specifically - the creative part is the source of a sense of fulfillment. In my neck of the woods it now is a good time to try to make wine by oneself, for example. Just harvest some fruits, order yeast and off you go. Woodworking is pretty fulfilling, too, especially the manual, non-electrical side. Or wood carving. Carving takes about zero amounts of space and is pretty meditative. Gardening is great, and can also be started indoors with LED lighting, if space is a concern. Sewing is pretty fun, the beginner stuff are things like tote bags, i.e. you can use your own creations after a few hours. Some people like drawing or painting, or writing.

The plus for most of these is that you can actually use your creations by yourself and have a great source of gifts for friends and family.

Those are all pretty low-tec-examples, but of course you could also look into diy electronics, game programming etc. For some those aren't optimal because they resemble work too much.

I would personally avoid hobbies that tend to devolve into collecting kit, e.g. photography. IMO Great activites are those where the fun part is the creative task itself, and which involve manual exertion (assuming you are a desk worker).