Good idea to sprout the limas from Walmart! Sorry to hear the frost got some of your little plants! I haven't tried re-growing celery that way but have had good luck doing the same thing with green onions. In case you haven't seen this yet, here's a link to a directory of Pennsylvania suppliers of PPE (including several types of face masks, face shields, and hospital gowns), thermometers, hand sanitizers, and disinfecting supplies (as well as suppliers in some other states too): dced.pa.gov/pa-covid-19-medical-supply-portals/pennsylvania-covid-19-ppe-supplies-business-2-business-b2b-interchange-directory/