There are lots of Vivo rewards waiting to be collected in the Systems Support Office (downstairs next to front reception - where the old Treasure Island was).
If you ordered something from Vivo more than a week ago it is likely that it is sitting in the cupboard waiting to be collected. Notices are sent to PD Tutors when items arrive at school, but it's always worth checking if you ordered something a while ago.
You can collect items at break or lunchtime.