I've started doing ritual magic at vale. It's generally a 10 minute performance where you create an interesting magic item. To time rituals more accurately it helps to have an appropriately themed measuring device so I bought a plain glass sand timer and built a custom cage to go around it. To line up the curves more accurately with the cage I took a photo of the glass and scaled it appropriately in inkscape, this let me quickly and easily trace around the basic shape to get something that holds the glass securely.
The decoration was quick and simple, just using some runes from the vale alphabet and their corresponding meanings that might relate to rituals and time.