Designing these printable golf invitations and collections got me thinking about how cool it would be if you could create your own mini-golf course in your backyard. I specifically included some Numbered Hole Flags and Scorecards in the collections to help number and score your course!
I also found some websites with inexpensive and creative ideas to get you started!
Martha Stewart has a downloadable mini golf course design that should get you started with your planning and give you a basic layout for your course.
Family Time has a simple 3-hole course that you can create from inexpensive items or objects you might already have around the house. You can adapt the ideas here to create more holes too.
Family Fun shows you how to make portable golf holes using soda bottles, tape and markers (you can also use the printable Water bottle wrappers from my collection instead of the tape). Easily incorporate these ideas into your course.
Chasing Dreams while living the Dream shows you can set up a mini-course in your garage too.
Boys Life Magazine has some great mini-golf hole ideas. This image above is called the Maze and is rated as a Par 5! These holes look like they involve quite a bit more time and effort using 2-by-4′s, bricks and cinderblocks.
Good luck designing your course!