we don't tend to do eggshells only cos we know people with chooks so they get the shells back (crush them into chook food - helps to make stronger shells on the new eggs!). all our left over cooked food goes to the dogs so nothing in the compost from there... no food (apart from onion peel and seeds from stuff) goes into the bin. if my bro is running short of food scaps for his worms, we might collect them up for the worms for a few days (usually salad leaves etc) and take them to him - we supply scraps and collect fresh liquid fertiliser. worm farm is definitely on the agenda for next year...