What would other sports burn?

The Ashes urn supposedly contains the burned remains of a bail. This particular item the advantages of being
a) flammable
b) relevant to the game in hand, and
c) small enough to fit in a little urn after burning

In the unlikely event that one of the other sports wanted a similar Ashes urn of their own, I reckon most would be struggling to come up with a suitable object to incinerate (i.e. one which meets all three criteria).

You'd burn the Ice rink in Hockey and turn it into Water polo.

I would burn Victorial Pendleton's knickers - after she's taken them off

I guess the sport then, would be Riding?

(I know, very unloidyloike.)

The computer that decides the rankings of College football teams for the Championship match.