My DD is 6 but at that age, she was very similar, she wasn’t into anything in particular (like Disney or Barbie etc )but she did like building/making/decorating things, so we bought her a large playmobil house (2nd hand off eBay) it was incredible, came with all the furniture and garden stuff, a swimming pool and loads of little bits and bobs like kitchen stuff, miniature food and cooking utensils, it even had different working lights for each room. DD was absolutely thrilled, her face was a picture (we set it all up for her) she still plays with it now (as does little brother)
Other things - lots of arts and craft stuff, her own art box, a couple of scrap books, sketch book, stickers, different types of paper, paints etc
Lego With Friends (which she loves and it kick started her love for Lego)
Playdoh set - it was an ice cream maker one
Books including sticker books and puzzle one, we got her a few of those wipe clean ones too for practising letters and numbers ( Aldi usually do good ones)
A couple of fun board games and jigsaw puzzles - stuff we could play with together