By far--my favorite Pyrex piece is the mini fridgie which is a teeny-tiny covered casserole dish. It comes in a wide variety of colors and patterns. Here's a sampling from my collection...

Why do I love the mini fridgie so much?
Two words: Portion Control.
I challenge you to find a modern-day bowl or casserole with the portion power and versatility of the mini-fridgie. It can go from fridge to oven to freezer, and is small enough to make even the most minuscule WW dishes look appealing.
Did someone say Mock Chopped Liver?

When everything you eat is 6 ounces or less, you really need a serving dish that can make you feel better about your sad state of gastronomic affairs. Am I right?
For more Pyrex fun, please hop on over to my other favorite blogging spot - The Pyrex Collective and check it out! Caution - Vintage Pyrex can be highly addicitve!