How about... STAIRS!!!
Some of the most difficult objects to access for modification in the game are modular stairs. Thanks again to the tools being developed by Inge and Peter Jones over at Simlogical, stairs are here!
Naturally, my versions lack any polish. But be thankful I didn't add any little blobs of bird poop to the rail posts either! I WAS very tempted......
And here's the real good news for downloaders! No more installation scripts! You can drop these stairs into your game and they work immediately - no fancy-schmancy stuff required.
Oh, and with all these windows and doors and stairs and terrain paints I'll be making, did I also mention I'll be making a fence or two? I just need one of those day jobs where I get paid for doing nothing at all, and then I could make heaps of this per week.