Don't take either of these suggestions the wrong way, but what I do is:
1) Use them as Christmas tree decorations. Honestly, tie a string around them, and hang them on the tree. They actually look pretty cool, particularly, the coke bottle output and rectifier tubes. But your 12AT7s will suffice
2) Give them away. The minuscule amount of money that will come back to you in a sale will prove of little consequence compared to the goodwill of sending them along to someone who could actually use and appreciate them
1) Use them as Christmas tree decorations. Honestly, tie a string around them, and hang them on the tree. They actually look pretty cool, particularly, the coke bottle output and rectifier tubes. But your 12AT7s will suffice
2) Give them away. The minuscule amount of money that will come back to you in a sale will prove of little consequence compared to the goodwill of sending them along to someone who could actually use and appreciate them