Java branches usually have mutli branched ones available although there usually a bit slippery so I usually vet tape them if I buy them. I like barked dragonwood and cork perches too for my birds. I absolutely LOVE the grapevine perches
@Mizzely carries in her store too so I've ordered a couple although they run out fast!
I've ordered from the Parrot Shop plenty of times, I find they have a really wide selection of things. Although I will say Things for Wings usually have the item for cheaper if they carry it (they're usually the cheapest I find for food and stuff too). I've also ordered from Exotic Wings and West Tropical Bird Studio a few times before since they also have a wider selection of perches and toys and some things are cheaper than the Parrot Shop. But I find the Parrot Shop as the easiest one stop store since they carry much of everything
Oliver's Garden is fantastic too! But I think the site is under maintenance at the moment