What a brilliant idea… light bulb salt and pepper shakers! Found this pair at an estate sale on a recent visit to my hometown. The lady told me they used to belong to her Mother and date back to the 40’s. What a great conversation piece! There are absolutely no markings on the pair to decipher their origin or maker but the glass does have natural bubbles from the forming process. There is a small hole in the top of each screw on the lid but these could be used for a plethora of things, not just as salt and pepper shakers. 
https://www.etsy.com/listing/102615408/vintage-light-bulb-salt-and-pepper

What a brilliant idea… light bulb salt and pepper shakers! Found this pair at an estate sale on a recent visit to my hometown. The lady told me they used to belong to her Mother and date back to the 40’s. What a great conversation piece! There are absolutely no markings on the pair to decipher their origin or maker but the glass does have natural bubbles from the forming process. There is a small hole in the top of each screw on the lid but these could be used for a plethora of things, not just as salt and pepper shakers. 

https://www.etsy.com/listing/102615408/vintage-light-bulb-salt-and-pepper