Right, you've caught me on a quiet day on the rigs so lets get down and dirty shall we:
Sorry chap but asking what craft YOU should get into is rather like asking what your favourite colour should be based on what everyone else likes... What do YOU want to do?
I'm rather biased of course but if you want to forge then as the saying goes where there is a will there is a way.
Having said that I fully appreciate your situation so we must be realistic. Spoon carving / wood work in general does indeed seem like a good way to go. BUT does that interest you? Do you think that will satisfy the desire to make things?
Me and Hamish (the Half Goat) were having a conversation the other day about materials and how wood doesn't do it for either of us. Leather is his thing; metal is mine. For some it's wood, for others it's fabric - my point being it's a very personal choice so if your heart isn't in it then is it worth investing your time into?
I won't pretend to know much about hitting wood with sharp and pointy bits of metal but I do know a little bit about hitting hot things with heavy blunt bits of metal.
Snappingturtle's set up is great. You don't need to over think what you need which is ultimately:
1. Something to get things hot (solid fuel or gas forge)
2. Something to hold the hot things (pliers, mole grips, tongs)
3. Something to hit the hot stuff with (hammer)
4. Something to hit the hot stuff on. (large sledge hammer head buried in a bucket of concrete)
5. A bucket of water (of the wet variety)
6. Suitable PPE - you've only got two eyes and ears so protect them at all times. (the serious type)
I've done videos on youtube about making a simple forge -
https://bushcraftuk.com/community/index.php?threads/diy-blacksmithing-video-series.142844/
I used to work from my 6x8ft shed in the garden. You'd be very surprised how much I could fit in there. The forge went outside though. I was right in the middle of a very built up area but always tried to be considerate to the neighbours - only worked during office hours, never past 6pm and nothing on Sundays. Just speak to your neighbours - explain what you're doing and you should be fine.
Costs?? I'd imagine wood carving is the winner there in the long run but I dare say with a little creativity I could set up a solid fuel forge and start hitting metal for the same or less money than the cost of a decent axe and knife set.
Burning a solid fuel forge is a lot more romantic but it has a much steeper learning curve and smoke is often a big issue for some people. A gas forge might be a better alternative. As it happens I'm putting together a forge burner kit for sale very soon.
Give me a shout if you need any advice.
All the best
Andy