We did a few flagstone walkways and I thought to post them here to give you an idea of how you might incorporate that into your landscape.
When the grass grows through, it should look real nice.
This next one came from a different job, but this is a nice walkway leading up to the house.
Unfortunately, I only have pictures with Colorado Red Flagstone. Hopefully we'll be doing some jobs with Buff Flagstone so you can get an idea of how that looks.
I was at the Colordo Mills Mall and noticed a path laid in sand with a retaining wall.
You can see that after a few years the grass grows right
between the joints.
Eventhough it is laid in sand, the project will hold together. The stone needs to be at least 1 1/4" thick.
Hopefully this gets the "creative juices" flowing in your mind on what you might want to do with your yard.