Small Gridfinity mountable glasses stands/holders. 

The main picture shows both versions (straight and 45 deg). The one behind is sitting on a 1x1x8U Gridfinity bin with a stackable lip. I've included the bin STL file if you want that.

Printing notes:

No support needed

0.4mm nozzle, 0.2mm layer height, 3-perimeters, 15% infill. 

Uses about 30g of PLA.