Its odd, but its the coffee mug I use at work. It took me a long time to find one that was just the right size, was sturdy, kept my coffee hot, etc., so if I can't find it for whatever reason, it just throws me off my game until I'm able to track it down. Completely not rational for something that only cost me $5, but there it is.
An old pitcher painted with flowers in fall colors that was my late mother's. I doubt that it has any monetary value, but it reminds me of her + simplier times. I'd grab it first on my way out the door during an emergency.
The crucifix that my mother's best friend and her father had as part of their funeral masses. I feel like God watches over my home, wherever it is, more because they're in heaven and loving me, too.
The locks of hair that I clipped from my daughter just before she passed away.
Nice weekly office supply!