Next time you sell something that has attachments - have a squiz around the house to make sure you round up the ones that have gone walkabout - let's face it you can't really use them now!

If the item had been used a lot some people might expect a few things to go missing but you specified barely used so it's reasonable to expect all the bits and bobs.

One way to protect yourself next time is mention it may not have all the pieces/ manual and put as is in the ad.