To avoid confusion, I'll label those pictures. The first one is Difficult1's house, the second one is SleepyOatmeal's.
On Sleepy's house I built a prototype for a door (which is now finished, by the way). He was on vacation, and on our small island his roof was the largest flat surface we had around. Unfortunately, he came back before I could take it off of his roof. He left me some mail, and I took everything down the same day. This was before I knew how to use /mail, but looking back I would have just /mailed him a heads up. Here is something like what the finished door came out looking like:
The build I made on Difficult1's house was broken by design. I had some extra diamonds from hollowing out a large hole, so I decided to build a machine to distribute a diamond every 5 minutes (4th giveaway, usually weekly events that get destroyed after I'm done with them). The picture below is an overview of what the redstone on the inside looked like. Basically, when an item despawned on the pressure plate, a signal was sent to the NOT which activated the giveaway dropper and the control dropper. I was never able to find out why this one didn't work, however. The reason I built it on Difficult1's house is because he is smack-dab in the middle of town square, so residents would walk through and randomly acquire a diamond.
Since it didn't work, I was going to destroy it. However, before I could, we all got on C so they could work on tanks and I could make my scarab. Actually, my memory is a bit fuzzy. It was either the day before or the night I got banned. Either way, the night I found out it didn't work and wanted to disassemble it I wasn't able to.
Finally, on the NSFW build. We have a drone in the sky that reads "The NSA is watching you". One night, some mates decided to get together and make a dirt farm drone in the sky with trees, potatoes, and carrots. One thing lead to another, and the build became increasingly phallic. One of the nincompoops from the island said something about it, and kitcat told me to take it down. It was down the same night.
I feel as though the redstone builds were justified, albeit executed poorly in regards to coordination with other island members. I do take full responsibility for the NSFW build, and would understand if that effected the length of my ban.