For ink stains (especially the liquid ink type) dribble on pure glycerine work it in we'll then wash. This can even be used on stains that have already been laundered.
Mop n glo build up on floors is a big time bugger to get off linoleum, tile or anything! Don't bother with the directions on the bottle for removal. Just go to the hardware section and get the orange scented paint stripper, it took me 1/4 the time. After I had already spent 4 days on my hands & knees scrubbing.
Colored pencil on walls; windex and clean cloth. Now I just use any brand magic eraser type cleaning sponge. Add water and one pump of dish detergent foam, the kind that takes grease away, work up a foam it's great to go on anything!