Yesterday evening, I ordered a delivery of a six pack of the local brew. Six cans of the required duly arrived and I stuck them in the fridge. They're still there. Plans changed.
This morning, I was clearing up and was about to throw away the plastic bag* the cans came in when I noticed there was a foreign object lurking in the bottom.
Investigation revealed a small package containg one 盐焗鸡蛋 (yán jú jī dàn) or salt baked chicken egg. Either a gift or it fell in accidentally. I did check but the store in question doesn't seem to carry these eggs. Perhaps it was the packer's breaktime snack. I'll never know.
* I do normally try to re-use plastic bags but this one had been packed by one of those people found working in the food and beverage delivery business worldwide who went to that special university and took a master's degree in tying plastic bags so tightly that they can only be opened by destroying them.