Gift for a 6yr old .....

Soooo let's just say I haven't been to a birthday party in soooo many years especially for a kid. 🤣 but ever since we moved to this new place 3 yrs ago our neighbors have been my kids friends... they invited us to there daughters party next month! Lol I'm tripping on what to get or how much to spend we are tight on budget :/ maybe $50 dollar budget is ok? I guess idk lol. What should I get her??!.... she loves trolls!!! ❤ any suggestions? Thanks 🥰