As the title tells, this site hosted by Aalto University is full of Nokia’s various product designs.

The archive has its own category for designs explicitly associated with the Y2K aesthetics. https://nokiadesignarchive.aalto.fi/?node=C0032

Here’s a “blue multimedia concept device with ear plugs” from the 1990s, looks pretty dope. https://nokiadesignarchive.aalto.fi/?node=A0029