Most of what I’m going to list I haven’t been to, but have seen listings of here and there, or have been to ages ago. Also this list will be random as I’m just thinking along what might be considered creative in any realm. So…
-There used to be, pretty sure still are, architectural tours in/around Boston. There was a really good one years ago of the Zakim bridge with the designer. Check the Boston globe, Boston Architectural Center, MIT, Boston Public Library, Boston Phoenix for offerings.
-DeCordova sculpture park and art museum.
-MIT museum - specially the Arthur Ganson section. Really nice guy on top of that.
There are interesting course offerings at The Artist Asylum. The fire breathing classes caught my eye a while ago. I have never been but kind of get the feeling that they are open to course/class ideas, so maybe you could get a special class for your team.
-There are weekends were artist (groups) open their studios for the weekend. There are probably more towns, but Cambridge, Arlington, Jamaica Plain, South End have them periodically. Also in the South End there are artist bazaars almost every weekend. All sorts of interesting handmade goods being sold. Again check The Boston Globe, Boston Phoenix for listings.
There are a couple other things but have to run to a long meeting. Will list later.
Good luck.
-Peter