I listen to Discover Weekly every week (I think I've missed 1 week in several years). Every time I like a song, want to hear the rest of the album it's on or want to hear more of that artist, I add that song to a big playlist (currently 906 songs) so I can open that artist's page later. On that artist page I often check out the 'appears on' section to check out albums or playlists with similar music. I treat that album/playlist the same as Discover weekly: If I like a song I add it to the big playlist.
I think this works great, I often discover new artists or songs, all more or less in the same (electronicy) genres though. I've also noticed that I can listen to some albums that are different, but it won't get added to my Discover Weekly, which is exactly how I like it. For example: sometimes I like to listen to the Red Hot Chili Peppers for an afternoon, but I don't feel the need to have similar artists added to my mix of songs.
I don't really use the Daily mixes. Every one of those seems to have the same couple of artist and the mix of artists doen't really changes over time.
And sometimes a friend of mine or some family members send me a link to an album or playlist they like.