I see an old rolliing pin and an old egg beater so you could go with antique collectibles..
I collect all sorts of old 40s and 50s kitchen stuff. You could find things at yard sales and at junk shops like GoodWill and Salvation army etc. I like spice tins and rolling pins and utensils of that era and I collect white granite ware. You can still find these things in antique stores for not too much. I give $2 or $3 for a spice tin. I have old muffin pans and iron skillets etc.
If the old collectibles interest you there is a lot out there yet.