Home-improvement expert Brad Staggs provides complete details for building a sandbox, a playhouse, a fort and swing set and a tree house.

DIY Network offers the free plans, material lists and building instructions are provided for all of these projects:

4x8 Playhouse with a Front Porch  A playhouse can give children hours of enjoyment. With a little imagination, you and your child can add custom touches to create a unique and engaging environment.

Combination Play Fort and Swing Set  This combination fort and swing set offers children a range of play activities. This entire structure can be built in one or two days, at a cost of about $900 in materials.

Sand Box and SeeSaw  This sandbox, with corner seats and a canvas cover, is one of the simplest playground projects to build.

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Backyard Project Plans and Kits  Build something great in your backyard with these beautiful shed, deck, gazebo, greenhouse. play house, playground, pergola, garden bridge and backyard project designs. You'll find hundreds of plans, building kits, manufactured buildings, guide books and building help.

Design Your Own Yard and Landscape with Plan3D  This new online service will help you create a home landscape and layout your walks, drives, patios, trees and plantings. View your yard from any angle. Create a new deck, garage or shed. Scan existing plans into Plan3D and take a virtual walk through your new yard. Everything is online, so you can get started today.