I also agree with ICOT about accepting gifts graciously.
I remember early in my marriage, my in-laws wanted to buy us our first washer/dryer, and I considered that to be too expensive a gift and not their responsibility to buy for us. I really did not want to accept it and even told them thank you, but that it was not necessary for them to buy this for us.
My husband asked our Rav if we should accept this gift. The Rav said essentially what ICOT wrote above: that giving gifts is a parent’s pleasure and we should accept it and just say “Thank you” to them for their generous gift.