The only custom spell I currently use is one I made a while back called Disassemble. It does exactly what it says: takes things apart. It's a permanent, touch range Manipulation spell that disassembles an object into its component parts. So a toaster becomes a pile of wires, metal plates, and molded plastic knobs; handcuffs fall apart into a pile of metal; and so on. It does no damage to the item and can't break welds (but I decided solder was reasonable) and the parts are perfectly fine so you could potentially put the object back together again. If you had the time, knowledge, and skill to do so. You, obviously, have to overcome the object's resistance. Especially large and/or complex objects (cars, commlinks, motorcycles, etc) can only be broken down in piecemeal; e.g. a door, then the engine, and so on. I'm careful with how I rule on it because it's potentially a very powerful. We mainly use it to "open" doors, remove handcuffs, disabled vehicles, and so on.