I've recently bought a fretless bass. I used to play fretless in a few bands many moons ago and I had the idea of returning to it with a view to exploring some more ambient excursions, than what I used to do with the bass. I like the idea of using instruments not normally associated with ambient.
Here's the one I got:
It's very nice, I'm left-handed, but I've only ever played right-handed basses, so I can adapt to playing it upside down. It takes some playing though and I intentionally bought one with fret markers !
I had the idea of using it to increase my 'sonic palette' and I am planning a more 'overt' guitar ambient album later this year. I need to knuckle down and play it a lot before I become the next Patrick O' Hearn