Balloon Mapping Kit, including shipping +one issue Grassroots Mapping Forum. With printed flight instructions and map making how-tos.

Kit includes:

5.5' (170cm) rubber balloon, 1000' of 110-pound line on an 8" hoop winder, protective rubber-coated gloves, three 100-pound swivel clasps, 10 zip ties, 1" ring, 10 rubber bands

You add a camera, a soda bottle, and about $35 of helium.

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