Fountain: How to Build a Concrete Fountain, Create a stone-lined garden pond, then carve a waterfall out of a block of stone using basic power and hand tools. The technique is simple, even for beginners.
21 DIY Greenhouses with Great Tutorials: Ultimate collection of THE BEST tutorials on how to build amazing DIY greenhouses, hoop tunnels and cold frames! Lots of inspirations to get you started! - A Piece of Rainbow (outdoor flower planters)
An Egg-cellent Apron: Free Crochet Pattern - conceptually too much fun
Simple built-in to create a mudroom and/or storage anywhere from an entry, to kids room or in a laundry room by adding shelves or a deeper bench for sitting. Put drawers under bench or have the seat lift up to store things.