At science fairs and with geeky friends, Theresa enjoys extracting DNA with some easily available materials like soap, salt and alcohol. Strawberries are very good for extracting, not just because they smell lovely but also because they contain plenty of DNA.
I always wanted to make a video about extracting DNA form strawberries but so far did not manage to do so. However, there is a lot of videos about the process already being out there, for instance this really nice one from NileRed.