Incredibly relaxing and spacey... yatha sidhra- a meditation mass https://www.youtube.com/watch?v=wvMwklkRsfE
Music I find fun to space out to are more introspective bands. My favourite group is probably IAMX, so I will just recommend them. The lyrics are deep and I always get fucked up and ponder such words. Fun times.
Just noticed this. Man Jane is such a good band. Great album. Together is such a good album too.. ... Jane-Daytime https://www.youtube.com/watch?v=oUnS_E7xGH4
Check out some of Modest Mouse's older songs. They are awesome just to chill too! (or smoke too haha) Also, explosions in the sky and this will destroy are awesome post - rock bands. They are only instrumental but sounds amazing. The Postal Service has some very chill one's as well.