Greetings from the US to the Netherlands bom.cabedal....

I have seen SCSI to solid state converter cards on ebay but they were expensive.  I believe around $250.00 US dollars.

I bought this compact flash to SCSI card, but have yet to install it or use it so I do not know if it is any good or not.  It  cost about $125.00 US dollars to ship to US.  It comes from Japan:

http://www.ebay.com/itm/CF-AztecMonster-CF-3-5inc-SCSI-Converter-Card-New-for-Vintage-Computer-/301666054722?pt=LH_DefaultDomain_0&hash=item463cb2b242

It fit perfect on the plastic HD sled in my color classic. You need software tools to format and init the CF card.  I believe you can not use Macintosh tools to do this.  You need 3rd party software. (someone correct me if I am wrong).

You can buy a name brand SanDisk 4GB to 8GBs or larger compact flash card on Amazon USA for about  $20.00 plus postage:

http://www.amazon.com/SanDisk-Compact-Frustration-Free-Packaging--SDCFHS-016G-AFFP/dp/B00GHBBK82/ref=sr_1_2?ie=UTF8&qid=1434901532&sr=8-2&keywords=sandisk+compact+flash+card

I do not know if this will work or not, but it only cost $5.00:

http://www.ebay.com/itm/1pcs-SD-SDHC-Secure-Digital-MMC-to-SATA-Converter-Adapter-Winodws-Mac-OS-Linux-/141695916713?pt=LH_DefaultDomain_0&hash=item20fdbc1aa9

You can also buy very expensive, but perhaps longer lasting CF cards like this one:

http://www.amazon.com/gp/product/B00ECEVE50?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00

I suspect you can buy CF and micro SD cards locally.

Keep us posted on your project.

jack