I decided to cover them with material that fitted in with the rest of our current outdoor setting - A quick look on the Internet for inspiration and confidence and...
Its another straight-ish line sewing project that has plenty of room for slack, misunderstanding and guessing (that are trademarks of my style of making things!) and is cheap enough to have a go at even if it doesn't work out exactly as you had hoped - It would seem my Harper's Bazaar taste is not matched by my beginners sewing capabilities!
Green-ness: 5/5 upcyling, recycling and multi purposed item created!
Frugal-ness: 5/5 for getting four covers made for $6
Time cost: The first one was a bit fiddly - maybe 20 minutes - and then I made the other three in forty minutes
Skill level: Basic straight-ish line sewing
Fun -ness: Great fun to make something cheap and useful so easily!