I realize this community is probably dead but I figured it wouldn't hurt to shout into the void if it is.
I enjoyed making my own yogurt in the past but got annoyed with babysitting my makeshift incubator consisting of a cooler and an electric blanket and stopped. Recently I took up yogurt making again but this time with mesophilic cultures. Being able to just leave batch of yogurt in a warm spot in the kitchen until it is set is just so handy. I'm also looking forward to trying some different cultures. I've got filmjölk and a viili cultures in the freezer for when I want to change things from the kefir simulate culture I've currently got active.
I bought them from here since I used them back in the day when I was doing the thermophilic culture thing and so I went back to them for the mesophilic cultures. It is part of why I'm doing a kefir simulate culture rather than grains as they don't offer grains. If you look around online you'll see other businesses offering mesophilic cultures as well.