I think I can sum up the majority of posts on this thread using our farm's motto:
More Is More.
We have been ringing our property with cut scotchbroom, twigs, sticks, downed smaller trees that aren't straight enough for garden poles or stakes, and other plant detritus that accumulates on acreage. The piles are for bird and insect habitat.
In front of the piles, I have been planting:
Native perennials such as nodding onion, camas root, cascara trees, nootka rose.
Every summer gets a larger and larger patch of flowers for drying as well as just for looking and for the pollinators - seed heads are broken off in the fall and scattered in front of the piles on the edges of the property: dollar plant, clary sage (2 year plant) sunflowers, cone flowers, echinacea, yarrow, lot's of lavender, agapanthus, etc.
We let lot's of veggies go to flower and seed - best so far has been arugula, beets and radishes and swiss chard.
Building more and more hugelkultur beds - for all the obvious reasons and especially for the animals and to save on water in the coming years as the PNW will be drying out.
We protect our bats!! Bat houses have been hung in the forests around the farm.
Hot lips salvia is a great plant that is still sending out red flowers, even just this week.
Hummingbird feeders are kept up all year round, but especially in winter. We have lovely visitors all year.
Big patches of our pasture have been given over to wildflower and wild grass growth. Win for me - less mowing, more pollinators, looks pretty and soft and the snakes love to live in that part of the farm.
We have let the forsythia go crazy - early bloomer and a nice slash of yellow in February or March.
We let our nasturtiums go until they are really really dead. I have found around here (maritime northwest) that the nasturtiums will grow and grow and send out tendrils and unfurl their flowers all the way to December in the right year. And when we get a little warm snap, and the bees wake up all confused and disgruntled, they have instant food and a place to land on the nasturtiums. We locate them all over the farm, although other varmints nip them down in the far reaches.
Garden "clean up" is not really a thing anymore - something I've noticed living on acreage vs the suburbs where I was compelled by our lease agreement to keep things much more "tidy". Things go dormant or dead, seeds are collected, slash is piled up, but it's an ever changing flow - never really an end. It's much more relaxing, at least to me and in my opinion. But I think Permaculture is relaxing.
One thing we have been doing for a longer term project on the farm is harvesting a selective amount of our evergreen trees and planting drought tolerant, fast growing trees, instead - the latest addition being silver drop eucalyptus. Our climate around here is gonna dry out pretty bad in the coming decades and the evergreens are gonna take a hit, so we are trying to diversify with flowering shrubs and trees as well as drought tolerant shrubs and trees that also support pollinators and niche species. Shade is important to all animals, and keeping what water we have where we want it is important, too. Some of the logs get piled up for habitat, some are burned for fuel in our home, some make planks for duck and chicken houses. It all gets used for something, somewhere.