Here's another monthly knitting subscription based service called KnitCrate! KnitCrate offers curated premium knitting packages to suit one's knitting's needs... Everything from the beginning knitter to more advanced knitter.
Here's a bit more information about KnitCrate from their website:
Join to Get Curated Premium Packages! Each Includes*
1. Premium yarn by a different company each month
2. Pattern(s) for a surprise project suitable for your subscription level
3. Enough YUMMY yarn to complete the pattern
4. A Sweet/Soothing extra to enjoy
5. A Fun Extra to love
6. Bonuses like promo codes with exclusive discounts
* Minis does not include a pattern or extras; Knitcrate Dyed-My Way and Knitcrate Newbies SOCKS do not include extrasI haven't subscribed to KnitCrate, but it does sound interesting!!