25mm Tissue Culture Vials with ScrewTops : Tray of 16 polypropylene screw-top tubes
These work great for seeds. We drill a tiny hole in the top of each vial and cover it with duct tape. Seeds are sterilized, then condensed into about 1-2 drops of sterile water. Using a marinade needle, the seeds can be pulled up, tape is pealed back, seeds are quickly dropped into the vial, tape goes back on top.