What to do with two growlers?

Hey guys. I have two Harpoon growlers that I can't return because I'm moving. So why not keep them, right?

I figure they could help with my home brewing somehow. I'm not into kegging yet, so with that said, what can I use a growler for?

Thanks.

 

They are good vessels for making starters.

 

If I have extra beer that won't fit in the keg, I will use a growler for a test batch. Add some oak, vanilla... Then I bottle from the growler using carb tablets. It works for experimenting.

 

what he said

also, other microbreweries will not mind filling someone elses growlers (some are picky and only use theirs, while others just dont care)