A nappy bucket is the cloth nappy alternative to the bin. Keep this in your bathroom or wherever is accessible and put your soiled cloth nappies in here.
Simply flush away any solids down the loo, remove the inserts from the pocket and place in the bin and put the lid back on. This bit being key...it keeps any unwanted smells away.
It's ideal to purchase mesh laundry bags with this item. They really help get the nappies from bucket to washing machine in one swoop.