We used to make our feeders out of a 5 gallon plastic bucket, and about a 3 or 4 foot piece of that flexible black corrugated pipe. I wish I had a pic to share, but I never took any. Anyway, it was easy to make.

1. Flip the bucket upside down
2. Place the corrugated pipe on the center of the bucket and trace a circle around it.
3. Cut out the bottom of the bucket on the inside of the circle you just traced.
4. Make about 4 cuts on the end of the corrugated pipe that are a few inches long.
5. Push the cut end of the corrugated pipe up through the hole in the bottom of the bucket.
6. Bend the flaps over from where you made the cuts on the end of the corrugated pipe, and shoot a screw throught the flap to hold it in place.
Do this for each fo the 4 flaps.

That's it. The screws keep the flexible pipe from coming out of the bucket. Then you just screw a hook or a hanger in a tree at a height that will let the end of the pipe be a few inches off the ground when you hang the feeder on it. The bucket and pipe will hold about a 50 lb bag of corn. As the corn spills out of the bottom of the pipe it will spread a bit on the ground around the end of the pipe, but that will keep the corn from continuing to spill out of the pipe. Then as the deer eat the corn off of the ground, more corn will spill out of the pipe to replace what they have eaten. Oh, don't forget to put the lid back on the bucket after you fill it to keep the rain out. Hope that all makes sense. They are a piece of cake to make and only take a few minutes.