It's been some time since I wrote Libellule's story, but I am still struggling with her TC. Basically, she is a stray cat who played a huge role in a depressed woman's recovery. The story is NOT about depression nor suicide, but about that life-changing meeting (for both of them).
I thought about items like cat toys and fluffy things maybe ? Her name means "dragon fly" but I don't know if there are dragon fly wings/minion onsite. I'm really stuck so if you could help me it would be awesome !
These are just some realistic cat items maybe you'd be interested in? There's probably more somewhere, but this is what I found. And the only non-CW dragonfly item on the site it would appear. :)

Thank you very much for your propositions ! I had totally forgotten about the collection items (mostly because they were rotting in my wardrobe in their dog equivalent).
Personally, I think when compiling a Treasure Chest, less is more.
I would try sticking to the items that mean the most, provide a variety, and don't add clutter.
For instance, instead of every cute cat toy item, maybe just one or two of your favorites. Or instead of every cat-oriented item, maybe just a color, the carrier, and the paperwork.
That's my two cents! Haha. Her profile is just lovely, though. It's all going to look very nice. ❤️
i personally think large treasure chests are better. much more impressive. although doing sets of every item color isn't that appealing to me usually. ( ehehhe) the art is adorable. i'm curious as to the significance of the minion? i like that you have the TC to where it is not too faded/small as that stuff looks terrible and i am not sure why people do it so often. i like your story and the inspiration~ it does, however, remind me of the controversy over catch and release or euthanasia, yadaya. feral cats do actually cause a lot of issues although it is not what your story is focused on so i have no qualms, really.
and i thought of these for some reason..
I totally agree with that way of seeing treasure chests and usually select only he most significant items, that can echo the story and tell something (for example one of my pet has a 7-items TC and I still think of it as finished), except for the hoarder characters (for obvious reasons). So, some of my pets have very tiny TC others are bigger, it really depends. I am going to tidy it up a bit, you are right, and I think I already have too many toys in there. Thank you for your input !
Yes, art is awesome ! Thank you for your suggestions ! ^^ Is the for the time passed in the hospital ? It wouldn't be appropriate here, between the mutual fund and national healthcare hospital bills are very cheap here not to say non-existent (even when I stayed a month at the hospital I didn't have to pay anything). The minion is Libellule's owner Solène (because you know sometimes it feels like the cat is the owner and not the other way) and I choose a sleepy yolk because she has narcolepsy and that minion enables an allusion to that (and also I find it very cute).