I used to get Loot Crate and while there was one or two cool things, a lot of it was junk I didn't want. Doesn't have much resale value either as loads of people are reselling it. I tossed a lot.

With that said, the mystery surprise element is fun. I just now only do it if there is one themed around a franchise I love, e.g. Fallout or Mass Effect, or if beforehand they announce there's stuff from at least four franchises I like.