Hints

How to Skip School:
To have your child sim skip school all you have to do is select them, click on the book shelves (buy one if you don't have one), and click on study.

Fast Money
Bring up cheat mode and enter the "klapaucius" code (or rosebud if using v1.1+). The bring up cheat mode again and enter "!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!;!:!;!" (you may add up to 60 total).

Garbage Bag of Holding
In the early stages of The Sims life time is often wasted emptying the trash and bringing it to the curb. I found that if you fill the cheap 30 simolian trash barrel you can order your sim to empty it and just as they remove the bag cancel the order. Then order them to pick up the mess that they just made and they will return the full bag to an empty barrel, which will now be empty. Do this every time it fills and trash need never be brought outside to the curb again. This saves a lot of time.

Paying the Bills
Simply keep a bill, unpaid, until the mail carrier delivers the next set. When your flag is up (your mailbox being full of-- what else, more bills), pay the first one (i.e., bring it out to the mailbox.) When you do this, the newer bills disappear. Using this cheat, you will only have to pay every other bill, instead of every one.

Building a Castle in the Clouds
Large second-floor extensions to a house, or even an entire house in the air, can be built totally unsupported by the following method. First, lay out a complete ground layer of pillars. You'll need lots to form a surface to build on. Next build your second-floor home on top of these pillars. It's important that you do ALL the structural work at this point; get all the walls placed and floors put in. Don't forget the stairs! Next, simply switch to the ground floor, and delete all the pillars. The house will remain standing, completely unsupported by anything except thin air! Voila! A castle in the clouds for your Sims!

Raise Sims Mood Bars
When using the move_object cheat you can restore your Sims mood bars by getting your Sim to sit in a chair, pausing the game and deleting the chair that your Sim is in. Your Sim will disappear. Unpause the game and click on your Sims face icon and your Sim will reappear with some restored bars.

Indoor Swimming Pool
If you want your sims to enjoy a luxurious indoor swimming pool, delete a single wall panel so that the spot for your pool is open to the outdoors. The game considers any area in that room to be outside. Place the pool and then seal off the swimming pool room.

Livin' Large Expansion Cheats

Full Traits
Create a Sim with no traits (0 nice, 0 active, etc.). Make him/her a yellow potion, and have them drink it. Your Sim will have a personality inversion, with all traits now at 10.