Computer in the shed = check the site in between games.
I am trying to find a small file or an emery board at the moment (or even some light sandpaper) to clean up some contacts on the Mousin' Around! Business card didn't do it.
Keep the sandpaper away from the contacts - unless they a high current.
I use the empty globe boxes - cut them into strips. Believe it or not, the waxy white side takes off more dirt than the cardboard side. If the dirt is stubborn, dip a small toothbrush into some alcohol - even dip the cardboard into the alcohol.