Please! any fundraising ideas that i can do by myself (not even parental help, they can't know)?

hey, Im 12 and im kinda trying to do something special for my parents aniversairy. i want to send them on a trip but it is kinda expensive. Right now I have $150.00 and i need $1 251.00 so i realy need some ideas. Please help. It would mean soooooooo much