Just throwing a bit more ideas for summoner accessories.
-If you noticed, you can find Teal Mushrooms in the background and use them for dyes. So why not add a summoner accessory made from it, since summoners are close to nature. The 1UP mushroom
View attachment 29514 (Probably just a +1 minion, since you can get it pretty early)
-One of the new added summoner armors is releated to the ocean, so it needs a themed accessory. While searching the ocean, i found some Seashells and came up with another accessory. A Pearl
View attachment 29516 (Not sure what stats should it give
)