Yes. Although the last time I played or heard anyone discuss conkers as a game was in the 1990s at school. My dad seemed to find the concept of fake conkers amusing enough to take it upon himself to craft me a resin filled one, although it didn't fool any kids.

In more recent years a bus driver complained to me conkers are not legal tender as I placed some down while in search of change. Around this time of year you will find most people have their pockets filled with conkers. </dev/random>