Pennhurst – Great idea! But they're still trying to get off the ground. Would the donation be enough? Would they have the requisite time/labor to invest in maintaining a Steemit account? Alternatively, because they're still developing, it might be easier for them to build Steemit into their infrastructure. (Note: the whole Board is white.)
Free walking tours – One can usually only take twenty kids (half of a class). Additionally, walking tours present a lot of problems for teachers who are already hard-pressed teaching to the test and negotiating issues of underfunding (e.g., lack of supplies, and art and music instruction). Also, I've often found walking tours to be ableist, failing take into account disabled people or people with physical difficulties.
Philadelphia History Museum – Negotiating a move to Temple from a historic site with the city government doesn't seem feasible given time and fiscal constraints.
City of Homes – $3000 wouldn't even begin to cover starting a whole new museum. And a planning committee shouldn't necessarily require payment. Regardless, there are already so many nonprofits doing good work struggling to maintain funding. Why add more competition?
Oral history collaboration – This idea is amorphous and would require a (volunteer) project leader to act as the go-between, organizer, and site host/maintainer. Might make a good student thesis project, but it's obviously much more constructive to simply allow these organizations to use the funds for general operating support and continue doing their great work.