Mid-century modern vintage plastic clip on light shades for single light
These have metal spring wire clips inside the shades, to hold edison style bulbs in different sizes without too much difficulty.
They just 'snap' into place on old light bulbs, so easy to install.
The plastic shades are an off-white color, and measure about 3 1/2" across the openings x 2 1/4" deep.
The plastic looks good without a lot of yellowing, though there's a little rust to the metal wire and hardware.