Optical bay to hot swap bay adapter? Not sure if its a thing

Hey guys.

I'm not sure if this is a thing so don't crusify me if I'm stupid for thinking there might be. Anyway I'm building a mini itx gaming PC and the case I am using is the Lian Li case Logan revied and used to build a mini itx gaming PC for LAN parties; I won't need a optical drive so is there a 'adapter' which I could slot in the bay which would act as a hot swap dock for my 3.5 inch hard drive? I don't need those 4 machanical drive bays and if possible I would like to remove them, I have a GTX 660 Ti GPU so I can't mount the hard drive on the bottom so that hot swap bay thing would be ideal. 

Hope what I've said makes sense, thanks in advance. 

I'm pretty sure dual 5.25" hot swap bays exist. Just had a look for you and found these http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=hot%20swap%20bay%20

Hope that helps you!