The white 'emergence' tube is used to put out your cocoons safely in the Spring. 
The large wooden 'block" with liner filled holes is where the bees will store pollen balls and lay their eggs. The block is sealed at the back with foil tape for extra security against pests.
The bundle of cardboard tubes with liners are used to add holes for bees to nest in once the block starts to fill up. 
The wooden "lollipop" is used when your cocoons are ready to harvest in October.