Outdoor adventure and makerspace tech combine in this inspiring how-to from the brothers behind the popular Facebook page "The Days Are Just Packed." Ollie and Harry Ferguson have sailed a toy pirate ship across the Atlantic, engineered a giant catapult, and launched toy astronauts into space—and they haven’t stopped there. They’ve created a list of 500 adventures to help them live life to its fullest, from setting up a wildlife reserve to building an igloo. Ollie and Harry’s Marvelous Adventures features the best of the boys’ escapades, captured in vivid photographs and accompanied by step-by-step guidance on how to replicate them. The brothers’ days are just packed—and with the help of this inspiring guide, yours can be too.