and congrats to all.
I pretty much liked the design of the RFF-Softie with the italic writing on it. Something like that with an added "10", maybe?
Concerning the mug and T-Shirt, i thought of the right half of a film rangefinder camera top plate with the frame counter set to "10". Just white lines on a black shirt or vice versa. Don't have the skills to ilustrate it, though.
Regards and thanks a lot to all contributors here on RFF,