It�s vintage boyhood and a miscellany of marvelous ideas: from kites and toboggans to workbenches and birdhouses, this collection of projects from Popular Mechanics� issues of long ago captures all the appeal of American ingenuity at the start of the last century.   With the rawest of materials, a minimum of technology, and a maximum of ingenuity, men and boys in the early 1900s dedicated themselves to crafting wonderful items, both practical and fanciful. It was a highly valued skill that revealed the measure of a man, and Popular Mechanics honored it and led the way in instructing these handy creators. Take a look back at those simpler, good old days�and at what we may have lost in our high-tech era�through these engaging projects, all published in the magazine during the first two decades of the 20th century. The range is simply amazing, and bound to appeal to woodworkers who love classic ideas. They include tools, like T-squares and sawhorses; an animal-proof gate latch and a birdhouse made from an old straw hat; household gadgets and handcrafted furniture; camping gear (including a screen door for a tent); and toys and games. And many of these appealing trellises, decoys, puzzles, and tents are quite doable today. Inveterate do-it-yourselfers will be astonished at the resourcefulness required to build a stove for a canoe and even a houseboat.