I think eventually you peak in terms of need for toys and gear (maybe not necessarily for recipes or ingredients or types of beer to brew.) But once you have all the gear and gizmos that works for whatever your process gets dialed in to. Every year I buy myself the birthday and christmas presents I want, since most of my family doesn't necessarily know what I want. So I buy my own toys. And I really don't know if any of them this year are going to be brewing related. I pretty much have everything. The keezer I built over the summer was my Birthday present to myself.
There's nothing much gear wise I "need" anymore. If I do opt for something brew related, it may be a colona capper to capm wine and belgian bottles, since I'm making wines and meads and stuff these days, or maybe a couple of those 2.5 gallon chinese kegs to make one of those portable cooler keg carriers....But there's no new shiny toy or even basic tool I need to up my game. My first git to myself was an immersion chiller, and over the last 7 years I've gotten just about everything imaginable, turkey fryer, refractometer, oxygen system, stuff like that.