Who needs a bell?
Bells, whistles, and other loud sound effects are often used in transitions to get people's attention. However, that's boring. Why not have your sound effects fit the theme of your project? If you're making an office training video or podcast, try adding some specific sound effects that meet the theme of your business! That'll help create an environment, even in a presentation, that's completely unique to your company. It'll also keep people on their toes and paying attention!