Making A Dry Creek Bed Drainage Canal for Downspouts. One of the most creative ideas I've seen for this project.
Planters made from plastic PVC tubes and mosaic tiles.
Glowing Flower Pots. Paint flower pots with Rustoleums Glow in the Dark paint. Absorbs sunlight by day glows at night. Great landscape and gardening idea.
Homemade Weed Killer 1 gallon of white vinegar, 1/2 cup salt, Liquid dish soap (any brand), Empty spray bottle. Put salt in the empty spray bottle and fill it the rest of the way up with white vinegar. Add a squirt of liquid dish soap. This solution works best if you use it on a hot day. Spray it on the weeds in the morning, and as it heats up it will do its work.
Dog Pond - Place a plastic kiddie pool in the ground. It'd be easy to clean and looks nicer than having it above ground. Big dogs can't chew it up or drag it around. Could work for kids too!