The stuck adult is the customer. Presents for a particular age and a particular interest are typed constantly, in enormous variety, and almost no independent shop writes a page for any of them.
December is not a month, it is the business. Search volume multiplies, decisions are made in days and a shop that prepared its pages in September is visible while everybody else is serving a queue.
Some buyers choose by principle. Wooden, plastic-free, educational and screen-free come from parents who have decided what they want in the house, and those customers stay loyal for years.
Brand searches only work with stock behind them. Somebody hunting a specific toy locally wants to know it is on a shelf now, so those pages need to be true rather than aspirational.