If your granddaughter is interested in Wall Street Bets and 0DTEs, perhaps you could consider getting her a book about finance and investing. One book that might pique her interest is "How to Day Trade for a Living" by Andrew Aziz. Another option might be "The Intelligent Investor" by Benjamin Graham, which is a classic text on value investing. Additionally, you could consider getting her a colorful stock market poster to hang in her room or office, or a subscription to a financial news service like Bloomberg or The Wall Street Journal. If she has a favorite stock or cryptocurrency, you could also consider giving her a share or some coins as a gift.
Or you can get her a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.