The biggest have been classical guitar, studying and learning languages, sinopaleography, brewing from malted barley and homegrown hops, painting D&D minifigs (and playing D&D of course), making chainmail armor, drawing, dyeing shirts, aprons etc. with fabric dyes, wax resists and tie dye, artisan yarn dyeing, Western and premodern Chinese calligraphy, French horn, arrowsmithy and fletching, and some pretty serious cooking and baking. Lesser ones: making ceramics and underglaze painting with cobalt, painting in watercolors and acrylics, molding glass, carving name chops in soapstone and microsculpting, leathercraft, treebark painting, antique collecting, and photography. If physical activities count, Matsubayashi ryu karate, medieval archery, racquetball, SCUBA, and spelunking. Probably more that aren’t coming to mind right now. And now, beginning magic.