The internet culture of Do-It-Yourself (DIY) is a fast-growing domain due mainly to the democratising effect of the Web. DIY culture is here defined as the social world of people engaging in DIY activities. DIY activities can be any activity from programming, to reenactment, to genealogy, which is done by a person with no formal training/education in this particular activity. Instead those engaging in DIY activities get their training through various forms of autodidact learning situations (e.g. social situations or expert interaction). Cultural institutions have a long and fruitful history of engaging with DIY culture. However, as DIY culture is getting increasingly better at organising outside of institutions, it is more important than ever that cultural institutions understand DIY culture, as well as how to continue the rewarding relationship with it. DIY activities can be categorised in different ways and three categories in particular are of interest in connection with cultural institutions. These are volunteering, amateur activity and hacking. The motivation and value for these three categories of DIY activity are different and cultural institutions must take this into account when planning activities that involve them.