Most kitchens probably have at least a couple of tools that are past their best. Here's a selection of which ones you should consider replacing more often.
Egg wash is made with raw eggs, so you should follow food safety protocols when handling it. But you can easily store it in an airtight container in the fridge.
Even though butter is commonly used in place of egg wash, it's made up primarily of fat and contains little protein, so it's not the most effective at browning.