1) Just wander around the town center, along Livingstone Way or Parkway (see map) and you will be approached by street vendors who will be trying to sell you some of the old Zim currency of that I can guarantee you. US$5 to $10 should buy you a full set of the different notes.
2) I would bring your own football along, it would not be easy to buy something like that in the Falls. You can get it inflated at one of the garages, again see the map, they have compressors for pumping tyres. Just bring with you the needle to inflate.
