Wheat and clover for deer. I used to plant all kinds of stuff - spring and fall. Some plantings required different planting dates a month apart. The hogs actually drove me to do it. They will graze wheat and clover - but typically wont root it too bad. No fertilizer, five consecutive days of planting for 35 acres, and the deer and turkeys use it just as well - if not better - than when I was planting everything under the sun.
Doe Factory - probably the biggest positive factor we have implemented. Back in about 2010 - my camera surveys turned up four does. We were part of the problem - just because the law allows multiple does to be killed does not mean you should do it.
Multiple One to two acre clover food plots where doe groups will make their home base. No doe shooting for seven straight years. We couldnt stop the neighbors - but we could stop ourselves. Went from four does to 40 does on those Sept camera surveys.
Defensive baiting. Baiting is a way of life where I live. Corn is stacked up head high as you go in the door at Krogers and quick marts. When you have 15 adjacent landowners - half of them with a corn feeder fifty yards off the property line - you will keep them happy with all your habitat work while they kill the deer you raised. After years of 15 acre landowners killing all the bigger bucks - we joined the crowd. We didnt just join them - we largely beat them at their own game. The neighbors normally just bait during season. We start with high protein feeds in June and go to Dec with that. I run a number of spin feeders using corn year round. Since we have done that, we have never killed a buck bigger than 185 lbs live. Now we kill a buck near or over 200 lbs every year. Antler sizes seem larger, also. The grand daughters have killed a few deer actually hunting bait - but for the most part - it goes unhunted. We have doubled our target buck harvest. Outbait thy neighbor and kill the deer early season.
What has been a bust, speaking purely from the perspective of improving wildlife numbers or use - any type of tree planting, NWSG, TSI hack n squirt.
I am not one to isolate my property from human use. I live on my property and am out and about on it daily. Might duck hunt in the morning, deer hunt in the evening, and coon hunt at night. Crawfishing, frogging, alligator hunting, fishing, thermal hunting, doves, dog training, fishing. Day and night - 365 days a year.