KomodoZero Oh my goodness, I forgot about the Skitty, how could I?
This is absolutely adorable. Do you know what merch line it comes from or anything?
As for myself, I actually don't collect a whole lot of merch, I just don't have the finances to be doing that sort of thing. However, I have a Quagsire plushie that is incredibly near and dear to my heart. It's from the Comfy Friends line of plushies. The thing is, she's not really very presentable anymore... I've been cuddling her nonstop for upwards of four years and she is incredibly worn at this point. "To be loved is to be changed" as they say.
This is what a Comfy Friends Quagsire looks like after four years of cuddling both while sleeping and while awake:


Honorable mentions go to my Worlds 2023 Lapras & Pikachu plush, mostly because a friend picked it up for me in person while in Japan so it's sentimental to me, and my Japanese Pokémon Crystal cartridge, which is the only language version of Crystal to have Suicune's head crystal visibly printed on the motherboard on the back. I don't really know if the latter counts as merch though lol