My LBs old nursery were losing things all the time, or sending him home in girls clothes/socks etc. I always used to email them as soon as I got home and then speak to them when I next took him in, regardless of how long it'd been. I always stamp all of his clothes as well so I found it frustrating with the frequency it was happening. It clearly wasn't just my LBs stuff they were losing as they always had posters up of clothes/outfits etc that had gone missing. I'd definitely speak to them about the lost items and ask that they look for them/pop a notice up with your missing items x
Ours is exactly the same 🤣. My son has lost soo many clothes and a bobble hat too. I can’t understand where they go! Surely if they went home in someone else’s bag, they would have brought them back?! I only buy cheap clothes from supermarkets/vinted/Primark for nursery too but it’s still really annoying.