Wheel and Axle

Emergency Sanitation
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A common bucket is used as the reservoir of a Simple Toilet. A plastic bag is cut in a funnel shape and inserted into the bucket to form a flexible bowl. Assembly lasts  15 minutes. See more.


Tennis Ball Pick-Up Tool   
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The Tennis Ball Pick-Up Accessory facilitates the conventional  
procedure of lifting a ball off the ground using a racket. 

Prehistoric Wheel and Axle 
Remember the father of all inventors.



Copyright 2005 Andrej Pretnar. All rights reserved. Revised: julij 31, 2014.