picpac2026 on Instagram: "This X post features a 48-second video demonstrating the disassembly and reassembly of the Hanayama Marble metal brainteaser puzzle, a Mensa-rated level 4 challenge involving interlocking cast pieces and a ball bearing, which has amassed its tactile precision and satisfying "clicks," echoing customer reviews that highlight the premium metal construction and sense of accomplishment from solving it, often described as a durable fidget toy for all ages. Watching such mecha