You'd be amazed what I've found up there or hanging out over the years - not recently fortunately!
Things such as
- condoms (used - at least once)
- bananas and other fruits
- vegetables - mostly carrots, other root vegetables and cucumbers
- toothbrushes (including electric)
- beads of various colours and sizes
- Mars bars and similar confectionary
- TV remote controls
- mobile phones
- vibrators (naturally)
- Sergei (this was a BBW as I recall)
Apologies, no links available.