My first two pieces were very LARGE! About en years ago, I wanted a "living room" acceptable enclosure for a large python. I made a set of bookshelves that came up about four feet, and the glass front python enclosure was the top half. The piece ended up around 5' x 2 1/2' x 5 12'.(h) ( I was single then, snakes are now only for the basement) The bookshelves are still being used, but a 6x3 commercial enclosure now sits atop the piece as my boy exceeded the average species size by several feet!.
My second project began about two years ago and is responsible for getting me into the hobby. I made a mission style desk to match the furniture we bought for my baby daughter's room. I am now told that it is not "officially" mission style, as it is made from pine! I am very proud of the desk and see it lasting for a LONG time. I used no plans, just started cutting! Other than a drill, and a belt sander, I had no power tools. Every piece was cut in a vice, then held up to the light with one hand and the belt sander in the other, to make it "square!!!" I got a router during the project, and have since gotten a table saw and a miter saw! I also used not one piece of metal or manufactured fastener.