DIY NAS build questions

So I’m relatively new ish into my IT career but finally decided it was time to build my own NAS at home to start a more home lab set up. Biggest thing right now is I have a bunch of old 2.5 SSDs and HDDs but I can’t seem to find the proper SATA cables for them. I’d like to save a few drives for a travel NAS but the home station will be anywhere from 6-10. anyone have any recommendations? (Most likely will be built off a raspberrypi 4 or 5 haven’t decided yet)