I used this egg tray to plant my seeds. I think it's a good idea because the thick paper can contain water and is strong enough to keep its shape unless moved or physically disturbed when wet. The moisture in soil can be kept at a considerable level for half a day or so until next spraying is required. At one time, 30 holes can be used for seeding. I'm already experimenting with the seeds above this time around. Maybe I should be getting another two or more egg tray for this purpose soon. Usually shop owners just throw away this tray after business hour is over, and you can get them all for free like I did.
Yes, I am a cheapo. But it works, so I guess it's fine ha? :D