I've been using this one for around 7 or 8 years now. It's cheap and it works!

 

That looks good

 

Have 2 and work good. Drilled for bullets.

 

Will they tip over ?

 

Had this one for over a year with good luck.

Flap is in good shape still too.

Brower Manufacturing Mineral Feeder with 2 Compartments LMF20 | Rural King

 

that one is quite a bit cheaper than the 3 compartment one I looked at

 

I use the one in the 3rd Pic I bolted it to a semi truck tire and put an eye bolt in it so it's easy to move.

 

I like that .