Save the Rhino!

The answer to the above picture should be, "Every 40K player."  No matter what you collect or play, you should be able to find a use for a rhino, so if you find one cheap, snap it up!

Anyone playing marines, chaos marines, or most of the variants should be able to find a use for it directly, same with Sisters of Battle.  Easy enough.

But even if you don't play an army that has "Rhino" listed as a transport option, you can get use out of one.  And given how frequently poor abused rhinos and rhino-chassis vehicles find their way onto ebay, they are pretty easy to come by.

If you play Orks, loot that sucka!  It makes a great base for a looted wagon, trukk, or battlewagon.  Bonus points if you have a regular marine opponent you can make it look like you captured it from.

Imperial Guard players could use it for conversions as well.  Use it as the basis for a command chimera, or perhaps a hydra or other variant tank.  

And everyone can use it for terrain!  Wreck it up and turn it into a terrain feature.  Take bits off and use them on the bases of your larger models.

Everybody's bits box should include a rhino!  So next time you see a neglected rhino, pick it up!  You'll be glad you did.