Yeah, the scrap iron thing works great because you can run the skid steer under it, and load it when it's full....

Another thing I have done is use it for seed storage.  Carefully cut the top off, then place bags (or bulk, I suppose) of seed in it. If you cut the top correctly, it will fit inside of the lower portion of the shuttle.  Add a little duct tape, and you've got a mouse proof container IF you remember to close the valve at the bottom !! LOL