And those little white flowers I showed the other day... after looking at my pictures, I was beginning to suspect they weren't daffodils after all. On closer inspection of my pictures, I noticed that there didn't seem to be a trumpet part (or "corona, as my research on wikipedia has taught me).
Today, they finally opened up completely and confirmed my suspicions.
Inside, the seeds I found when cleaning have turned out to be duds - not a sprout among them. So I picked up a couple more seed packs