I have a good relationship with my PIL and they’ve been very good to DH and I.
DD is first and only GC for them which is a source of great excitement and they dote on her which I’m really happy about and grateful for.
The thing is, DD is merely weeks old and each time they come round they bring multiples of cuddly toys! They’re so random as well - this weekend she brought round a teddy bear wearing a Christmas jumper 
We now have dozens of little (and some huge) cuddly toys filling her nursery. Toys she won’t really play with for a good while yet. To be totally honest I am wondering if it would be unreasonable of me to “release” some of these fluffy critters back into the wilderness...
There wouldn’t really be a way of asking her to stop either, as although we do get on she’s quite sensitive and on the brink of what we believe is dementia/Alzheimer’s so I feel as though raising it with her would be causing an issue for no good reason.
I would raise it with DH but even he made the comment the other day of “more toys...”