There's a place in al satwa road right behind iranian hospital, a small shop called @RPG Games got a great collection. Might even fix your console if you needed.
There's a place called Royal in @Al Quoz Ind. 2 - O&O Recreation Area or somewhere near it, that customizes shirts or even makes your own design on them. My friend got a couple of shirts done there but i dont think they'll make them individually you need at least a dozen.
Best hotdogs my opinion are the ones you find in these mini cafeteria's around the city, There's one next to al wasel park that's good. There's also one called @Antar Cafeteria which is very famous.
@Nike would do the jerseys, or you can find a couple of cheap shops for buying by the dozen then taking it to @Mercato Shopping Mall parking floor you'll find a shop that'll add the names on for around 30 Dhs.
There are a couple of areas you can rent quad bikes or go with your own in @AlWarqa Barr Area . Watch out for the really expensive ones, some of them would rip you off. Just cause their quad bikes are costume made.