I have several projects come to mind, although there isn't one that is actually *better* than the parent band, but all as good, IMO, brilliant in their own right, typically in a different way...
In 1976 each of the 5 members of Yes released solo albums, and I consider 2 of those albums to be essential to anyone that is interested in discovering the best of their catalog.
Jon Anderson's
Olias of Sunhillow
...and Chris Squire's
Fish Out of Water
Robbie Robertson's 1987 eponymous solo album is about as different from The Band as one could possibly imagine, but it's wonderful and I would put it on my "Best of the '80's" list
I really like Jerry Cantrell's
Boggy Depot, although TBH it does sound s lot like a Layneless Alice In Chains album
^^^sexy video^^^
...I'll think of more. Great topic idea