Ok Sorry for the delay
I wanted to expand on what Finchly shared. Finches are very pragmatic. They don't use toys in the same manner as parrots. That said they do benefit from challenges and opportunities to explore. I think vertical perches are critical as it gives them more ankle rotation and helps build strength. I will attach a cool pic I found online just to give you the idea. For enrichment I give my finches bird safe live plants. They do destroy the plant, eventually killing it. However they spend hours ripping the leaves and considering which to build with. It gives them something to challenge themselves. I keep males, I don't have a risk of a population explosion, so I don't stop my boys from building nests. They will craft projects all day long and jettison the nest to try again. Peppy, my other finch, has very high nest crafting standards. In terms of chewing, they don't chew like parrots, but they seem to enjoying picking at bark, natural branches should be used. I provide some fresh greens daily, with pea shoots being the absolute most popular. I mix it up sometimes, but a lot of the veggies are ignored. -Pea Shoots however are devoured. Bathing is another helpful enrichment, I offer a bath daily in a shallow dish on the bottom of their cage. They simply love bathing. Probably because in the Outback water is a treasure, so they have evolved to really appreciate fresh water. Zebra finches can starve very quickly. I personally use a feeding tower with a perch on opposite sides. They can fight over feed access so having multiple feeders or lots of feeding ports helps. I think you just need to be clever and base it off your own flock size.
I do not think hand taming is a good reason to consider a finch. I have seen some cool youtube channels of hand tame finches, but these are exceptions and not the norm. Finches are tiny birds, around 12g, so imagine a hand tame finch and a human blunder. Even with the best intention we out scale them to an extreme degree. I think it is better to focus on building trust and letting them be around you, but not touching unless there is a good reason to. ei. taking them to the Vet, etc. As said earlier, Zippy is very human curious. He gets excited to see me in the morning, which he expresses by hopping in little circles and cheeping. He sings his courtship song to me and when he is free flying he follows me landing on surfaces near me to watch. He finds computer screens interesting and will look over my shoulder.
Anyway I hope my experiences with my zebras gives you an idea.
View attachment 358554