I can relate to the op somewhat. When we had our kids my mum went a bit crazy, to the point where the children started to expect everyone coming in to the house should bring presents and questioned those who didn’t.

This was particularly funny/embarrassing when people actually would bring them gifts, they would ask why the gifts were so small, and where the real presents were 😕

I had a word with her last Christmas because we knew what the kids actually wanted and I knew she would buy something ridiculous and upstage “Santa”.