Here are plans for a playhouse with a shingled roof that is built to withstand wind and weather.  
 
Browse over 21 free playhouse plans on FreeWW.com:

Here is an easy boat plan where the boat is built out of plywood and measures 12ft long and 3ft wide and weights 50 pounds.
 
This is just one of the many boat plans you can find on FreeWW.com: http://www.freeww.com/boat_plans.html
With these instructions you can build a beautiful waterfall that requires less expense, yet looks awesome in the backyard.

Here is a plan for a folding bench that is light weight yet extrememly sturdy and best of all can be easily stored away.

Plans for an attractive wooden Japanese jewelry box with six drawers. Great for organizing jewelry. 
Here are slide plans for a slide built using standard joist design along with supported post with galvanized fasteners.
Here is a step by step plan how to build a beautiful stone patio to help create a well manicured lawn.


This squirrel and bird feeder is made out of pine and plywood and can be easily built using these plans.

You can build a six foot picnic table with treated lumber and regular pine, just follow these simple plans.
P
Build this multipurpose ottoman with a spacious storage unit and a cushioned top for resting tired feet.
 Here are plans for a hoosier cabinet with tons of storage and a porcelin enamel counter top. This cabinet makes a beautiful addition to any home.