Every time I see something interesting and I get the itch, I ask myself 2 questions:
Q: Will this make my music any better or increase my enjoyment
Q: Where would I put this?
Most of the time, the first question is the end of it, but sometimes I may need to ask the 2nd question and the answer is, nowhere. I don't have much space. I've limited myself with space. I have 1 proper desk that holds my iMac , monitors, audio interface and gear, and this is the only space I allow myself for music. This limit to space is also the reason I favor elektron products over others, as the functionality to real estate ratio is quite good.
For me, putting these limitations leads to pretty good productivity. With little clutter, there are no distractions. With fewer pieces of gear, you tend to get pretty deep with them, and you will only add to your stockpile when you really, REALLY need a function that you don't currently have.
Cheers