So all you will need for this GPS is a skinny tube (ie toilet paper holder or tampon apllicator), a roll of corded string ( can be glow in the dark), some duck tape,  a bobbie pin, thicker nylon string, a belt, and common sense..

Step 1: Assembly

Gather your supplies
cut a piece of the nylon string about 1 foot long
attach a bobbie pin to the end
feed the string through the toilet paper dispenser
roll duck tape backwards over the tube
place the rolled up cording over the dispenser tube
attach using fed through string to belt or fanny pack (not backpack!!)

Attach the devices string to something stable like a stake or trail or hitch. I used a drawer

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