Should you keep a gift for your baby that you don’t like?

I know Christmas was a while ago but here goes: my mil got our baby a “Santa sack” - you know, those giant sacks you’re supposed to fill with presents - and I just do not want it. I really don’t know what to do with it. Like I know she meant well but I literally have no plans to use it in the future and she’s one of those people who will comment if she notices you’re not using something she gave you. Should I just get rid of the sack and hope for the best? Is there a way to repurpose it? I don’t want my mil to be disappointed but at the same time I feel like I want to give it away to someone who will actually use it. What do you do with gifts for your baby that you just don’t want?