Automatic Tomato Ketchup
Jars or bottles containing the tomato ketchup should be designed in a way that the ketchup shouldn’t spread over the cap after once it is used. Otherwise one has to clean the top of the bottle every time it needs to be used. The constant need to do this becomes irritating.

In the following instance, the top cap of the tomato bottle is overflowing with tomato ketchup. This is the condition of the bottle just after being used for extracting the tomato ketchup. This design of the bottle needs to be changed so that extra ketchup is not spilled around the edges of the cap.