Divers: Rare drops

[Schizophriend]

So I've messed around a bit because I couldn't find a guide on which enemies drop which kind of item, meaning the green items you can use in the shop. I've roughly found out where most of them drop but there's still some that I just can't figure out.
Here's what I found so far, I'll try to go in the same order as they appear in the shop (no idea what they're actually called):

-Orbs: Seems to drop from the earliest enemies, like Cattlefish or Anemones
-Ribbon-looking thing: this is currently the only one I don't know where to find, all I got is 1 from a treasure chest
-Jelly: from Piranhas or the Slimes the left of the starting area
-2... grains of rice?: got them in the bottom right area from the Jellyfish
-Bubbles: I actually don't know where I got them from, I have 6 but don't recall getting them
-X-shaped items: from the ghosts in the bottom left area

So I have no idea where I got the Bubbles from or where to get the ribbon-like items. Can anyone help me out? It's kinda tedious killing all these different enemies

UPDATE: I got it, it seems like the ribbon things drop from the fishmen in the bottom right area, same area as the jellyfish. Now I'm only curious about the bubbles (1st item in the bottom row)