Yeah!,
every month a different T-shirt, with the names of the competition winners on it and with a different design and ... Mark will become rich

Why only T-Shirts, I would buy Toilet paper and books !!! A series of Flash books produced by famous Flashkit-print!

Mousepads I would love Mousepads !! And perhaps a special Flashkit Flash-Edition with mousepad, T-shirt and toilet paper (the last is not a must ).

And I want real big posters in a size like 3m*5m.

Flashkit Condoms would be great too ... eeh.., but maybe Pope wouldn't like that