I find it quite fascinating to try to imagine the whole museum. I think I would like to have it divided into (at least) two parts.
The first part should be about the cultural history of spanking as punishment, and I would like it to be strictly factual and contain trustworthy information about to what extent and in what form spanking was used as punishment at home, at school etc. through the ages. To the extent it is still possible, I would like to have information about the frequency, the severity, the implements used etc. In addition, I would like this part to contain information about people's attitude toward spanking as punishment at different times, as well as typical (and true) descriptions of actual spankings. A good exhibition of implements and a collection of realistic and authentic spanking pictures would definitely be welcome - and I wouldn't mind a few reconstructions

The other part I imagine being about spanking as a sexual fetish through history. It would contain spanking art and literature through the ages, as well as actual evidence of spanking play in different cultures. It should also contain an overview of theories about spanking as a sexual fetish - why do people indulge in such a ridiculous practice?