I haven't tried the Cult Beauty moisturiser yet, but based on that (lack of) recommendation, it may go to the bottom of the pile! I'm already struggling with the scent of my current night and day moisturisers, which are both Origins from a Christmas gift set - DH commented that I smelt like I'd been rubbing Starburst sweets on my face...
My stash is slightly smaller than yours @CherryMargo - I've got 166 products at the moment (32 full-size, 134 samples). But that doesn't count any make-up products as I only wear make-up once in a blue moon so don't tend to buy any, I just use the stuff you get in GWPs so I don't feel so obliged to use it.
My stash has largely been built up from a habit of saving anything I got in a GWP, under the assumptions I'd use it up when travelling. But with minimal travel for the last year, that hasn't really happened - and even before that, I wasn't actually getting through them that quickly anyway. Plus I've got quite a lot of "treatments" - masks, intensive conditioners etc. - which need a conscious effort to use them, and I haven't been doing that, so they've just grown in number.
BUT, in my defence, if I limited myself to one travel size and one full-size item for each category, that would still mean I'd need 32 products on the go at any one time. So I'm being realistic about my target - I reckon below 50 would be a good number, anything after that is just a bonus.