Christmas Present returns

A question about : Christmas Present returns

Last year my Daughter was bought quite a few presents from family and friends that she didn't play with. I knew as soon as she unwrapped them she wouldn't play with them. These presents are all still in their boxes. This year should my Daughter get any presents that I know she won't play with how do I go about returning them and exchanging them for them for something she will enjoy without a receipt or knowing which shop they came from? When people asked I did say last year and have said this year what she likes.
Hope this doesn't come across that I'm being ungrateful? People just seem to assume because she's a girl she likes dolls etc.

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