I seem to be the opposite to your niece!
I was 21 in march, I wanted a bracelet, went out and choose 1 with my mum and stepdad, and then my best turned up to my party, and bought me a bracelet, and my sister and sister in law also bought me a bracelet as part of my present! I love all 3, and wear 2 on one wrist and the 3rd on my other wrist!
my dad then took me shopping, and I wanted a silver chain, like a curb chain or whatever they are called, we found one I loved, and it cost hm �15.99!
I have never taken it off since! nice Jewellery doesnt need to cost much, but then Im not an expensive kinda girl!
To me, having my family around me at my part and my few close friends meant more to me then any present ever could!