Five Star Gift Ideas

Here are some gift ideas for your mayonnaise-loving grandson:

1. Customized Mayonnaise Jar - You can personalize a mayonnaise jar with your grandson's name and picture or choose a unique design that he would love.

2. Mayonnaise Cookbook - Look for a cookbook that features a variety of recipes that make use of mayonnaise as one of the primary ingredients. This might help him discover some new favorite dishes.

3. Mayonnaise Merchandise - A quirky and fun t-shirt, hat or coffee mug featuring a mayonnaise themed design will definitely show your grandson that you're supportive of his unique interest.

4. Mayonnaise Gift Basket - Assemble a gift basket consisting of different flavored mayonnaise along with some complementary food items like crackers, chips, cheese, or salads.

5. Virtual Mayonnaise-making Class - If he's interested in the craft of mayonnaise-making, you can enroll him in a virtual tutorial or cooking class that would teach him how to create different formulas and recipes.

Remember that the key is to always be thoughtful, and select a gift that would bring him joy while staying true to his unique hobby of adoring mayonnaise.

Or you can get him a star map with an important date you share.