Here's one of our mineral feeders we bought at an auction. Each skid on the bottom has a chain so we can hook it up to the tractor and move it around. The inside part is split into two sections. It easily holds 100 lbs. of loose mineral.
I just bought 2 almost identical to that one from our local FFA chapter my son is in. $65 for one $75 for the second one. Figured it be cheaper to buy 2 and not have to move them around as much.
Our local FFA Chapter is showing a feeder now, can be used for feed or mineral, we are buyin it when they are finished showin it. LOL I'm with them now , just showed in San Antonio, where they gotta blue ribbon on it, and will show in San Angelo, and Houston, then our county fair, then we'll get to bring it home to use after that. Here's a pic of it.
That thing's too pretty to put out in my field, cows would be scared of it! Now if you take a sledge hammer to that roof, some burnt motor oil to the sides, and let the cows "paint" it, then it might fit in around here.
That's why when we get it to the pasture we'll be puttin a piece of pipe across each side, to keep em from jumpin up in there. They put those on the feeder they built last year. don't know why they didn't this year.