Our very longsuffering CM has had my two DCs including SEN DS from age 2-4 and our DD who is admittedly easier to manage from 0-4. So we've had a longstanding relationship with her as DS is now 6. She's been very flexible, almost never says no if we need extra care, and has just been like a home from home particularly for DD.
What could we give her as a present when DD goes to school? They won't be going to her after school but may do the odd Inset day; for some further context, she lives in a fairly small flat, she's a grandmother herself to primary/preschool aged children, she's Asian Muslim, and quite religious. Lives with husband and slightly boomerang grownup son!
She has a lot of toys of all varieties but not much room for more, though perhaps lacking in creative type stuff (they do colouring/drawing but probably not painting). There isn't much locally to take children to so they tend to go to the library/bookshop/ducks/park/firestation/play in the yard. There wouldn't be a soft play or anything near enough to get her a season ticket to. The children cook a lot and dress up at hers. I am pretty sure she has aprons etc. for the children though.