I use Benjamin's method. I put a small strip of reflective tape on the handle of my lexan spoon and do indeed use it as a dipstick. The bottom edge of the strip marks one cup in my MSR kettle, and the top marks two cups. Thus, I can use the spoon as a measuring device, I can eat with it, and the tape helps me find it if it is dropped in the dark. I sometimes use a Ti spork that is marked the same way.
Incidentally, I mark a lot of my gear with yellow reflective tape. It identifies the gear as mine, and it helps prevent loss. I started with marking my climbing and caving hardware, and just progressed to marking lots of other stuff. Most small "droppable" items are marked, and I wrap a bit of tape around the top of my Ti tent stakes to avoid tripping over them and to help keep them "found." With a headlamp, reflective tape just leaps out of the darkness! It's great stuff!