So I came up with the idea of a "Detect Chest" spell that would work similar to the "Detect Life" spell just with locked chests and casks instead of living beings. You could buy the novice, apprentice, journeyman, expert and master spells from NPCs which sell spells from the mysticism school. These five different spells would differ in the range they allow to detect these containers similar to Detect Life (or additionally they could scale with the locks difficulty, so you can only see the very hard locks if you have the expert or master version of the spell). This spell could even be useful while entering a dungeon for the first time, to be sure you haven`t overlooked a chest in a dark corner.
However, this would add a very useful spell to the not so popular mysticism school. How do you find this idea and would such a mod be possible to make? It also could use the same shader that Detect Life uses.