Instead of a garden party:
a croquet tournament.

A croquet set from France, where this sport, subsequently so popular with the English gentry, originated; made by a manufacturer who has specialised in such high-class and high-quality sports equipment since the middle of 19th century. Eight mallets, eight balls, ten hoops and two central pegs comprise the set which can be used to turn a garden party into a real match. The mallets, balls and central pegs are made from lacquered hardwood and the hoops from galvanised steel. The set comes in a sturdy box with two wooden handles, which can also be used for storage.