A technical patent drawing from 1961 illustrates the exploded assembly of an interlocking brick toy system, rendered in detailed mechanical line work against a weathered cream background. Multiple cross-sectional views show the construction layers and internal mechanisms with the precision of an engineering schematic, creating a sense of nostalgic innovation and industrial clarity. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.