RF Chokes/Ferrite Beads, do they have a place in your system?

Hello and thanks for responding!

I have a large collection of chokes/beads and was curious if they have a place in your system and what benefit, if any, they may have. I have tried them only on power cords where "maybe" there was an audible improvement. Are there other areas of a system where they may be desirable to install?

Thanks!