Great design isn’t always about grand things but it is always about the end user.
Consider this design – an integrated measure for chemicals. This commercial sanitizer is used at a ratio of 1oz per 5 gallons. While some containers have devised a measuring cup using the cap, this bottle had an alternate solution – a measured cup built into the bottle, fed from a small filler tube, also integrated into the bottle from the bottom.
To measure 1oz, the user simply opens the cap on the measuring side and squeezes the bottle. The result is internal pressure in the bottle which pushes sanitizer up the tub and into the measure. Then the user pours the pre-measured liquid.
The measuring “cup” has graduations for smaller amount too.