Here are a couple gift ideas for you. Buying a gift for your friend and family's aquarium is tough but check out these Orphek flash lights. They would make a perfect stocking stuffer. You can use them to view the tank after the lights are out and also use them to enhance taking pictures of your tank. They are just plain cool, sure to please any fish and coral lover. 

The Robosnail is another nice gift that makes cleaning the aquarium glass automatic. Just make sure you know the thickness of tank you are buying for. The standard Robo is for tanks under 1/2" thick. The HC is for 1/2" and above.

Save 25% on  Orphek Azurelite 5 Watt LED Flashlight Offer ends 12/24/14

Save on the RoboSnail 10mm and HC. Sale ends Dec 24th. 

Works on standard glass aquariums of 55 US gallons up to 300 US gallon aquariums or 208 liters up to 1,135 liters when constructed with glass of (6mm--12mm or .25 inches- .50inches)

Made to work with most freestanding, rimless, or in wall mounted aquariums

Rechargeable Battery can last upwards of 30 minutes