I have a Lego Mario too. It's the small/regular Mario from the first SMB. It's also all that remains of my Lego collection. I had a huge collection from childhood that I held on to for years and years, but I eventually made the hard decision to part with it all, since I knew it was just going to sit untouched the vast majority of the time. When I still had it, I dabbled in making some other sprites. I seem to recall making the white dragon from Dragon Spirit once. I was kind of limited in what I could make, though, because my collection was just a hodgepodge of many various Lego kits. I often didn't have the right amount or sizes of certain colors to make sprites that interested me.