If you are looking for an easy way to keep spiders out of storage boxes without using pesticides or other harmful chemicals, try this inexpensive solution.
How to Keep Spiders Out of Your Outside Patio Storage Boxes (eHow) [lists multiple natural things that repel spiders]
These DIY outdoor storage benches are a great idea for adding additional seating and always making sure that bocce ball set is just within reach.
DIY: How to Build This Restoration Hardware Inspired Console - using stock lumber, metal brackets and industrial casters. This is a great project and, because of the brackets, it's a great beginner's project - via Jen Woodhouse
DIY Outdoor Storage Cabinet (would need to waterproof it)
Small storage shed: 24 Practical DIY Storage Solutions for Your Garden and Yard for behind our garage
DIY Pallet Wood Hose Holder with Planter Build a unique hose holder using recycled pallet wood! This holder has a special feature; you can plant your favorite flowers on top. I love it!