Tiddly winks - it's what those numeracy counters have been crying out for.
Shove ha'penny soccer - a pupil makes a goal out of fingers on one side of the desk, while another has two shoves to get the penny through.
Recycling basketball - practise scrap paper "free throws" into the recycling box.
Strictly dance mats - ask a pupil to bring one in for a day. Truly unleash the potential of the interactive whiteboard Pin the tail on the donkey - one of my pupils gave it a historical makeover and played "pin the eye on the Cyclops".
Balloon keepie uppies - they make their own rules and it lasts for ever.
Skittles - empty water bottles can be useful.
Paper aeroplanes - open a window and challenge them to fly one through.
Battleships - as good as it ever was.
Fantasy World Cup - check out www.schoolsfl.com Or of course you could always do quiet reading.