My styli with the new grips; the sheet of card taped to the tablet makes the surface less slippy, aiding drawing.
A couple of hours into my first all-nighter in the new flat and the rubber grips on both my Wacom styli split. These aren't actual components of the styli, mind - since I have a tendency to put The Death Grip on anything I draw with, I squeeze them into foam-rubber sleeves designed to make pencils more comfortable to hold. Since the Wacom styli are much fatter than pencils, the sleeves only last a couple of months before splitting. I have a supply of spares, but - I realize at 3am - they're safely packed in the loft of our little house in Nottingham.
I can order more online, or see if the art shop down the road stocks them, but neither option deals with the fact that, by 3.30am, my thumb is already getting sore from the hard plastic of the stylus; after a little experimenting I find that three sheets of loo roll folded over into a 1 1/2 inch strip, wound tightly around the stylus and secured with masking tape, does the trick nicely; you have to disable the button on the stylus, of course, but I've never been able to control that anyway.