I got an idea for a Fetch Modus: Electron Configuration
Putting an item into your Sylladex will assign it to a random spot on the periodic table. To retrieve it, you must enter the correct electron shell configuration for that block. For example, say you enter a soda pop into your Sylladex and it gets assigned to the block where Carbon is. You would enter configuration 1s^2 2s^2 2p^2 or [He] 2s^2 2p^2 to get it.