Where to get Helium...

You have two options available for filling your airship with Helium:

 
1) You can buy a disposable Helium tank.
There are several sizes that are commonly available and hold from 9 to 15 cubic feet of Helium. You can get these tanks from Toys 'R Us and other retailers.
 
2) You can take your airship to a local shop which has commercial-sized Helium tanks and have it filled there. As the Helium slowly leaks into the surrounding air, you can repressurize the balloon by gently inserting a straw into the valve and blowing through it. The remaining Helium will continue to provide the lift and your breath will merely repressurize the balloon so that it does not sag. Stores that have Helium tanks include florists, toy stores, hobby stores and party-supply outlets.

 

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