Best/fastest way to gear alts

I'm ilvl 600 on my main right now and I want to start getting some alts up, but it has already taken me quite a while to get to ilvl 600. I dont want to have to invest the same amount of time into an alt to get them to the same point or close to. Is there a good and fast way to gear them?

I remember during DF, I geared like 8 alts on forbidden reach, and that was super nice and relaxing. Could just put on some tunes and join the mob and get easy loot