Used EIZO L365 monitors are available for a few bucks, still. Shape and colour of the case matches well the ancient Mac's design. Supported resolutions are from 640x480 up to the native resoulution of 1024x768, which is nice to use with the image diagonal of 15" (37.5 cm). It has VGA and DVI input connectors and inbuilt stereo speakers. Some of the non-Sony CRT equipped Apple displays use a connecting cable with a VGA-style DSub connector at one end and a Mac-style DSub connector at the other end. The L365 + such cable make a perfect companion for old Macs. Find details in the FlexScan L365 User's Manual.