Learning Experience... Technology has changed a lot over time, and with this fieldtrip it would be a great opportunity to have the students compare the past and the present while at the Museum and then once in the classroom. Asking questions while on the tour, would be a great opportunity to have them share what similarities and differences they see.
As a teacher, pointing out certain aspects that are missed by students should be mentioned as well. For instance, the similarities and differences in iron's and wedding dresses.