The Atlantean Beehive is a great source of useful gifts and bonuses. You'll find it at the beginning of an Endless Island.
Buy some Nectar from the Trader and give it to the bees. You can buy up to 18 Nectars on each Endless Island. 
Open the Beehive and press the Start button. The Bees will get the Nectar and give you a reward. You will receive one of the gifts chosen among the items in the honeycombs.