I use a chunk of railroad iron as an anvil, a small grill, charcoal and a hair drier. A 24 ounce (3/4kg) ball peen hammer and a 2 pound (1kg) masonry hammer and old lawn mower blades. I have a PVC pipe set in the ground full of old cooking oil for tempering. I also use my oven for final tempering. I have made several knives and two swords with those.
It's very difficult to get to welding temperatures, so I usually set my project up so I don't have to. Also, I heat the blade up to remove the temper from the lawnmower blade, then cut my rough shape with a hack saw.
This is much more time consuming than if I had a shop with the proper set up and forge but it's probably better than what a lot of ancient blacksmiths were able to use, plus, I am starting with steel, that generally wasn't an option for most of the ancients.
And yes, Mauro, it's all your fault.
My next project will be making and casting something from bronze. I'll blame that on Mauro, too.