Protecting fruit from birds/squirrels

The fruit at risk here:

plums and pears at fruitlet stage to pigeons. Plum are a problem but the pears can be kept quite small and netted for a few weeks till the fruit are big enough.
strawberries, netted for birds but eaten by squirrels
raspberries in fruit cage damaged and eaten by squirrels
cherries in fruit cage - squirrels
red and black currants and gooseberries harvested in fruit cage.
nectarines in polytunnel a lot of insect damage; fruit flies, earwigs and slugs.

all in all, a lot of work to feed a few squirrels.