I have a bucket list folder on my computer, various quilt books and magazines with flags sticking out of them, and a lot of ideas saved on Pinterest and I just browse them until something calls my name. Or, I see a fabric I love and try to figure out what to do with it. Or, if I need to make a particular kind or color of quilt for some reason I do some googling until something fits. Or, I get a blast from my own past and actually finish a UFO, often making slight changes that resolve whatever drove me away from the project originally. It's a decidedly whimsical process, and I like it that way.