Madrigal
I find Vision Quest to be very light. The colouring of the images is gentle paste in the main, and even though it still offers clear messages, and can be honest, it is never brash. Not fluffy, just gentle.
Vision Quest is what came to mind for me, too. It's not what I'd call light or fluffy, more that it's gentle. The LWB has a way of framing things in a way that is affirming but not sugar-coated.
Animal Wisdom Tarot is another gentle and instructive one.
For those times when you're feeling truly fragile DV's Guardian Angel Tarot or her Fairy Tarot fill the bill nicely.