Reuse an old tree to make a log pathway in your garden. Good use of "yard" trees and other wood that can't be milled; works much better in climates without termites. Good drainage under the log rounds will make the path last longer.
Log Bird Feeder - 23 DIY Birdfeeders That Will Fill Your Garden With Birds (my note: I haven't looked at all of these, but at least one is a terrible idea. The window birdfeeder -- birds could fly into the glass and hurt themselves.
Be creative when it comes to container gardening. By roaming through your local thrift store you will find treasures to use for container gardening. Here is an old wooden plant stand and a wooden crate filled with plants. A great treasure for your patio.