I have that plastic bin as a run for my hamsters. It's a great size, they love burrowing in it.
If you make a lid for it, please do post photos as I would be interested in what you do.
I have never made one for mine as I use it as a run.
Also, if anyone shops at sainsbury's and has nectar points you can get it for free or cheaper
these videos might help give you an idea re it's size. it;s great with wheels on for moving it around.
https://www.youtube.com/watch?v=1Xpx...Rqnido&index=9
https://www.youtube.com/watch?v=FrDy...JO-zmU&index=4