This re-usable stencil is a great way to add a notification to your geocache. All you need is a can of spray paint to customize your geocache. The surface coating prevents runs and smears common with most plastic stencils.
Worldcaching usually has some of these in stock, if we run out we will bring some in with our next Groundspeak order. Worldcaching places an order with Groundspeak once a week and we usually have it within a week.