Okay, it’s not an actual iMac G3, but this cute charging stand from Elago is styled to look like one of those 1998 iMac G3s in the juicy colors. As you can see, the Elago W4 stand holds the Watch horizontally, so it supports Nightstand Mode.
The stand is made of silicone, so you don’t have to worry about it scratching your watch. And the silicone will prevent the stand from sliding around or scratching your night table. You feed your own charging puck into the stand for power. Get the Elago W4 stand in blue ($12.99) or in pink ($14.99) at Amazon.