I have only replaced them with the “proper” tools.
I would be quite happy to bodge it at home on my own forks. They are just a press fit, need to be pulled or knocked out, then pulled or pressed in. There are a few variations on the “proper” tools to do it, the Fox and Andreani use expanding collets with a lip to grab the bush very evenly. Andreani uses a thread and receiver tube to pull the bush out, I think Fox uses a slide hammer. BLL do a hammer out tool that is like a mini headset cup removal too. Andreani draws them in through the footnut holes with a threaded rod.
There are old threads on MTBR using a washer with flats filed on it to act as a toggle to pass through the bush then hook it, can be used with a slide hammer or threaded bar and a receiver tube. A couple of videos on youtube now as well.
Just depends what tools/scrap you have available and ability to make or bodge bits up. Make sure you measure the bushing height, or do one side at a time so you can copy.
Flanged seals are the old ones, the new seals are flangeless.