I have being using my Manfrotto Pixi tripod a lot but one feature was missing. The old gorilla tripod had a spirit level integrated in the tripod. So far I have been using the spirit level app on my phone but it is not as accurate as I would like it to be. So I designed a spirit level attachment (you can download the files to make your own here). It holds a 8mmx22.5mm spirit level which is readily available on eBay and works perfectly.
3D printing is awesome!
George Timmermans, Research Toolmaker, Software Engineer and Tinkerer