Haven't yet started, but I've got a few different plans in the works.
For my white oaks (currently being grown) I'm going to move to a DIY smartpot that is 2-3 gallons in size. I'm trying to find a bark based mix to put them.
I have some RO dogwoods and what I believe to be American HB cranberry and speckled alder cuttings rooting right now. Come spring, I'll move these into Rootmaker 4 inch bags (I got these used for cheap, but If I need more I'll be getting the 5 inchers). Depending on their size, I'll either move them to the field in the fall, or I'll "pot-up" to the 8 inch bags and keep them in for another year.
I've got some speckled alder and ninebark growing from seed right now, and I'm planning to do the same as I am doing for the cuttings.
Next year I'm going to be doing DCO's, hazelnuts, and assorted shrubs from seed (elderberries, ninebark, assorted dogwoods, serviceberry, sumacs, russet buffaloberry, viburnums, chokeberry, leadplant... I'm trying a bit of everything). I'll be starting them and then putting them in the RM in ground bags and then planting out in the fall or the following spring. The hazels and DCO's I'll probably leave for 2 years.
As far as where I'm putting them it'll depend. Those that aren't as needy for water, I'll put in our veggie garden at our cottage near our property. It'll get watered once a week by our neighbor. Those that will be really greedy with water will be at my actual residence about 2 hours away. I'll be able to water them MUCH more often and when I'm at my cottage I'll be able to have family members get them.
Also, I'm doing them from seed just as a cool thing to have a bunch of genetic diversity from all over the state. You can do the same thing with cuttings and be fine.