They look impressive but no one seeing them has the slightest idea of how they were made. Demonstrations of particular crafts, with opportunities to try it yourself would be interesting. There should be many more opportunities to do something rather than just look and read. At most collections it is impossible to touch items because of the risk of damage or theft but things made of metal or wood could easily be handled or operated if done under proper supervision of craftsmanship but the skills and techniques involved are not immediately obvious. Demonstrations of these crafts, with opportunities to try it yourself would be interesting and help people to appreciate the importance and value of an exhibit.
Temporary exhibitions are a good opportunity to attract young people.
Perhaps a fashion show could provide a chance to try the clothes on. The buildings of many museums might possibly be used for many other things. This would bring people into the museum. Links with schools and colleges could bring more young people into the museum. Most museums have lots of work-placement opportunities.