Dirty woodstove glass? Try dipping a dampened piece of newsprint in the fine white ashes after your fire has died. Whipe it onto the glass in circular motions - it works well if the glass isn't terribly dirty to begin with.
When you process wood in your shop, it is helpful to make notations on boards so you remember which have been cut to length or run through equipment like planers or jointers. Instead of using pencils for the notes, use chalk. Chalk lets you mark the wood without marring it so you can be more liberal with your notations. An inexpensive children’s sidewalk chalk set will provide several colors so that you can color-code your marking system.