[Her interest in trinkets and funny little items has never been so active as today, and so during Louis' own comparatively much gloomier perusing, there's Frieren nearby too, a silly oversized witch hat on her head (bit on the nose, if someone asked her but okay) and a half mask covering just the top half of her face looking all green and wrinkly and a wrinkly nose to match.
She seems not to mind the costume or even acknowledge it much, instead focused on inspecting an item that looks like an eyeball in a box. One squishy little poke and BOING - small magical sparkles burst out as the item springs out like a toy, bouncing ridiculously. Ohhh. Oh she wants it. That is, until the attendant explains how to obtain the things at this stall.
... What do you mean she has to win it as a prize??]