I keep seeing them mentioned, and think they can be great!
So far I have tried
Spicery - a box of curry or similar spices and a recipe, delivered monthly. I found them a bit faffy tbh, but my son really enjoyed the ( 21, at uni)
My little box - hit an miss. Has a theme every month, beauty, craft and bits. Good for teens I think
Pink parcel - I love this - great products ( beauty, chocolate, drinks) and towels/ tampons - but is it a good gift? Not sure!