The other day i had gone to Capitol school grounds for a walk. A few poor children came there with nothing but their ragged clothes but wanted to play. After sitting and watching for sometime, they approached a group playing football and borrowed the extra foot ball they had and new game was born :). The "bowler" would roll the ball on the floor, the "batsman" would kick it as hard as he can and "run". The "fielder" meanwhile would fetch the ball, he would either kick it from there to the "bowler" or throw it.
Similarly there was this gang of some 6 children from a government school playing volleyball with tennis ball. This was not very new to me since we had played "round tennis" similarly in the school days.
Isn't it amazing the way we have altered the game fit our various constraints
