backbone
to have plenty of backbone

beef
he's got plenty of beef

cupboard
plenty of cupboard space

drive
he had plenty of drive

fish
there are plenty more fish in the sea

grit
he has plenty of grit

horn
horn of plenty

plenty
plenty large

pluck
to have plenty of pluck

room
there is plenty of room

rope
...give somebody plenty of rope

sand
he has got plenty of sand