Here's a project that's great  on it's own, but even better when built in multiples.  It's a portable deck chair - or as I call it a "knockdown" lawn chair.  The chair is sturdy enough to stay put on your deck, porch or patio in inclement weather, but knocksdown small enough that you can take it to the ballgame or store compactly during the winter. 

Download Chair project plans.pdf.