My old games I don't want to go into too much details because I might recycle some of it. One big thing back then was that everyone played the local Swedish games, so I had to jazz it up to make it interesting enough. This meant stuff like (e.g.) playing as the turtles of the 1987 show. Other than that I often played one-shots with new players, often with the adventures from the rules book. Most times it was fairly improvised so sometimes things would go crazy.