What does Grandma Wang Er ask for?

Buddhas are not in appearance. You can choose one according to the name of a Buddha, such as Sakyamuni Buddha, Amitabha Buddha or Pharmacist Buddha. Bodhisattvas include avalokitesvara Bodhisattva, Earth Treasure Bodhisattva, Manjusri Bodhisattva and Samantabhadra Bodhisattva. Choose one bodhisattva to represent all bodhisattvas. There are also all bodhisattvas, such as Nawo Shifang III, representing all buddhas and bodhisattvas. However, I suggest you ask for a scripture, or worship it. It doesn't matter how many times you worship, because you haven't become a Buddha yet, just show your sincerity and respect. I don't want to be outside, I have a Buddha in my heart, and I am always comfortable. If beginners don't understand, you can search the Sina blog of "secular causal education" on the Internet, which is very suitable for beginners.