I don’t think it’s weird. It’s just an item from your childhood that you’re attached to for emotional reasons. A lot of people have one of these - be it a blanket, a plushie, a toy, a videogame, a necklace or some other piece of jewellery, etc…

They might remind you of your childhood, or maybe of the person who gifted it to you or someone else whom you knew at the time. I don’t see anything wrong with having attachment to your memories.

When I was 5, my parents gifted me an owl-shaped cushion. That same cushion is still on my bed over 20 years later. Looking at it brings back memories of my childhood, and it has this soft, short “fur” which reminds me of the dog I had back then, whom I miss very dearly. Touching makes me feel like my dog is still with me somehow :)