The first two are
Erfurt Feldpost issues. They were issued by the Nachtjagd (night hunter) and Sturmjäger (storm hunter) Associations of the Luftwaffe's Air Intelligence School 5 at Bindersleben Air Base, Erfurt, Germany. They usually go for about $15-25 for the single, or $35-50 for the pair.
The remainder are iron ration stamps, with one sheet metal ration stamp (the overprinted one). They usually go for abot $7-20, depending on watermark and face value.
In the photo you originally posted on this thread, the bottom two are Erfurt Feldpost, the top right is a NSDAP (Nazi Party) donation stamp ($15-25), and the top left I'd have to check the literature.