Two of the 3.5" drives are EIDE drives and the rest are SATA.
So... are you continually swapping those EIDE drives between the Mac and some bit of irreplaceable specialist equipment that only takes EIDE drives?
I get that's a possibility but if not, then the time has probably come to drag your system kicking and screaming into 2010 and junk those drives. I'm not one for junking perfectly good technology but - excepting the 'specialist gear' qualification above - a 10 year-old disc drive is ripe for retirement, and probably have tiny capacities by modern standards. If your other 6 drives are of a similar vintage you might want to thing about consolidating them to fewer, newer drives.
If you can get the EIDE out of the equation, there are plenty of multi-drive enclosures to choose from (e.g.
https://www.amazon.co.uk/Sabrent-Tray-less-Docking-Station-DS-SC5B/dp/B07Y3WDHLD) - but compare the price with that of getting newer, higher-capacity external drives. Also, with energy prices these days, you really don't want to be continually running 8 full-sized hard drives.
What if i had a SATA to EIDE converter and i used that to an open type docking station?
Should work - and if you
are frequently swapping these drives between machines, or using bare drives for a rotating backup, then those open-type docking stations may be useful. There are some with IDE support (
https://www.amazon.co.uk/Docking-Tccmebius-TCC-S867-UK-External-Enclosure-Red-Black/dp/B07MVGGG62). If not, they're useful things to have in the cupboard but I wouldn't use one day-to-day.
...but, seriously, unless you have a very good reason for keeping EIDE drives around, I'd take them out behind the woodshed and put them out of there misery with an axe.
Disclaimer: I haven't personally used either of the linked products. I do have a couple of old "open type" HD docks which have been useful in the past (and many boxes full of old IDE drives awaiting the day I get round to securely erasing them with a hammer and disposing of appropriately).