I've set these up as public playlists. The reason I've done this is that Spotify doesn't let free users skip enough tracks in a playlist. You're basically stuck with their random shuffle, and no way to select a particular song from the list. And Apple playlists are reserved for Apple users.
Enjoy using these!
(I found that YouTube seems to arbitrarily add songs to lists for some reason. So you might have to weed tracks out every now and again.)