I've been using the little plastic 'cups' from bottles of 'cough medicine' for years to hold my condiments and spice when cooking in camp. The past few years I've also begun using, clean!, the large plastic clear cups atop my laundry detergent as a large measuring cup. I found the ones' I use to measure a full cup wet or dry food. You can use a Sharpie to mark the sides from 1/4, 1/3, 1/2cups and since it's clear you can see the contents as you fill it unlike non clear cups. Free if you look when you shop, and lightweight to boot!
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PEPPER SPRAY AIN'T BRAINS IN A CAN!