Not ALL my villagers have yards... but a few do. Here are the ones I have right now:
The top one is Coach, the bottom two... well, you can see the home owner's right there- Merry and Dobie.
The idea for Coach's was just a workout area. It's also somewhat near the beach, so I kept it bright and the hibiscus shrubs added extra color and tropical flair. I tried to think of a good workout machine or something to have outside, but he has SO many in his house, so it felt redundant. But then I realized the colorful tire stack looked REALLY nice beside his house, and I added the dirt patch, because I imagine it's his new, avant garde exercise regiment- he moves the tires back and forth. He also has a protein shake bottle right there, and water in the cooler, so he can stay hydrated.
Merry's is pretty fancy 'cause I wanted one fit for a future pop star! You can't see the full area around the pond, but there are lilies and peach trees (if Tangy ever moves in, this gets converted to her yard, and those are replaced with orange trees ☺) and wedding fencing that ropes it off- but you can still walk over the lily part to fish. Her house is on the west part of my island,on a large chunk of land that is really dedicated to her house/yard and that's it (though the strip of beach below it has a nice boardwalk)
Dobie's house is in the top right corner of my island, on the strip of land that's separated by the river coming off one of the river mouths. There's just that log bridge going to it to make it feel more isolated and haphazard. He has a "Keep Out" sign because the local young 'uns like to use the beach beside his house (there's a rocky part just to the north) for late-night bonfire parties. He gets grumpy and hollers at them, but he secretly enjoys listening to their music from his house. His main yard has an oil barrel bathtub and heater, 'cause they look neat. As well as a generator, because it fits with his off-the-grid aesthetic. He's got a campfire for cooking food, and that little folding chair overlooks the river (and there's a break in the barbed wire fence) so he can fish there. He also has a small fishing area by the ocean, too!