The Tin Can Tourists (tincantourists.com)
rallies at Camp Dearborn (in Milford) might be worth a visit. They have one every spring and fall near Memorial Day and Labor Day.
It's not a Skoolie group, but there's a few home builds and conversions among the old campers there. Lots of unique stuff to get ideas from.
(Looks like May 14-17 is the next one. Open house is Saturday, the 16th, noon - 3:00. 2020 23rd annual spring gathering