after you press the cheat box comes out. Then keep the cheat boolprop testingcheatsenabled true
copy this cheat and put in the cheat box. After you keep you can do these activities (you can activate this cheat by clicking shift)
1.shift+click in the mailbox will come the important things.
2.one funny thing is shift+click in the telescope and click in the DEBUG and you will be taken by a UFO.
3. You can shift+click in anything and delete even a sim.
4. You can shift+click in a sim and even make them vampire.
You can try in lot if things.
hope it helped