1. Something that shuts off most of your brain, but makes up for it by ramping up your dopamine levels to ridiculous levels. Basically, you have no free will so others can order you to do things, but there's enough of your mind left to watch as you're made to do horrible, horrible things (like, say, Procedure 110-Montauk). Possible Cheshire Cat grin and/or regenerative properties for affected individuals under consideration.
2. An old pet collar with the word "Tumbles" (or some such name) on it. If worn by a dead animal capable of wearing it (not fish or birds, basically), said animal is revived with the personality of "Tumbles". The animal is then alive as long as they wear the collar (they probably die eventually as well). Cannot be used on the same animal twice. Pretty basic stuff.
3. An average metal safe with an electronic 8-digit keypad. It only opens if a person enters their birthdate as the code. Inside is something that is always useful to the person, or something that will soon come in handy. These might include anything from a watch if they want to know the time, a chocolate bar if they're hungry, a weapon if they're in danger, or a last will and testament if they're about to go on Keter duty. It only does this once for each person, however.
4. An antique-looking bookcase. If a book is placed on it and left alone for a while, it will be found with several hand-written comments, as if it's been marked by a teacher. There's a grade on the last page and everything. Oddly enough, this grade will have a significant impact on those that read the book afterwards: A's and B's will cause readers to be enamoured by the book (but not in an addictive way), while F's and "see me"'s will cause readers to react negatively, perhaps violently towards the book.
These are all just off the top of my mind (and it probably shows). Any of these worth developing?
