HDD in ODD caddy?

So I had bought a ODD caddy for my HDD to put in so I can have a SSD and HDD in my laptop.

My only issue is that it would not fit properly and screw down on my laptop.

I decided to take my Optical disk drive out of its caddy (the one that originally came with my laptop) and put the adapter out of the other ODD caddy into my original caddy and then put my HDD in it.

The only issue is I have nothing to keep the hard drive in place and stop it from moving?

What would be recommended to hold my HDD in place that will not damage my HDD but be able to hold it firmly in place?

I thought about using foam but I am unsure.