MIL’s birthday

I have NO idea what to get her. She’s the type to want sentimental things so we’re doing a family photo for her but I don’t want to just get her that. She also said don’t over spend on her but I’d feel bad just giving her a photo. Maybe I can get my 3 year old to write her a letter but I’ll write it, he’ll just tell me what to write.

I need advice.