I use the standard 10x20 tray but maybe this will work?
https://www.homedepot.com/p/Jiffy-12-Peat-Pellet-Seed-Starting-Greenhouse-Kit-J312G-17H/313965533?source=shoppingads&locale=en-US&&mtc=Shopping-B-F_D28O-G-D28O-028_006_SEED-NA-NA-NA-SMART-NA-NA-SMART_SHP&cm_mmc=Shopping-B-F_D28O-G-D28O-028_006_SEED-NA-NA-NA-SMART-NA-NA-SMART_SHP-71700000064195859-58700005709850381-92700052081027736&gclid=CjwKCAiA78aNBhAlEiwA7B76p-9CBT3SNehxJhHLLsHd11EbUNdouNPz5wCmbzb7CNuEKPO-IfMwvBoC5fQQAvD_BwE&gclsrc=aw.ds#overlay