Ropalidia romandi - Piñata of peril.

A paper wasp nest! Ropalidia romandi
Another common but less noticed species is Ropalidia romandi,
a small, yellowish wasp with dark-brown markings. It builds a
nest of several combs stacked upon each other and covered
by a thin, papery outer envelope. In northern Queensland its
nests are medium-sized and normally attached to the foliage of
trees but in south-eastern Queensland the nests may be huge,
sometimes over a metre long. They are normally attached
to the underside of the branches of large trees especially
eucalypts. When the trees shed their bark the nests fall to the
ground. The wasps immediately abandon the fallen nest and
build a new nest. network.qm.qld...