Crystal PACKS from QRPme:

40m 7-PACK. QRPme's 7 crystals on the 40m band!
Sudden Storm 5-PACK. 5 cRYSTALS ON 4 BANDS!
Hc49-US 4-PACK. 4 LOW PROFILE crystals covering 4 bands!.
Baker's Dozen PACK. 13 crystals covering 5 bands!