They either want V-Bucks for Fortnite or cryptocurrency. That latter part is somewhat surprising, though it also shows the maturity of Bitcoin and altcoins ...
source https://www.google.com/url?rct=j&sa=t&url=https://www.livebitcoinnews.com/fortnite-v-bucks-cryptocurrency-top-teens-christmas-wish-list/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGTkTBNkKGJmcvR6C2zkjbG45p9Ig