The Pedro's Six-Pack Chain Tool is a minimalist multi-tool that works well on its own or alongside a multi-tool that lacks a chain tool or spoke wrenches.
Made from heat-treated tool steel, it fits almost anywhere but performs like a full-size chain tool. The chain tool has 3.2, 3.3 and 3.5mm spoke wrenches built in, and the slot behind the anvil doubles as a Presta valve core wrench.