I just started making extra money on the side of my regular job for extra college expenses. I don’t want my parents to know because they will 100% ask for at least half of what I make. They watch over all my expenses. I get cash right now but how can I use this cash for online purchases? I already have a couple credit cards, but should I open a new bank account? Is that easy to do on my own without receiving mail about it? (They check mail) Can I open another account with the same bank so they think its just mail for the account they have access too? Should I get a visa gift card instead?

Edit: Thankyou for all the helpful comments! I’ve actually decided to open a debit account with PayPal and use this. I will also ask to start doing my own taxes and slowly start breaking away from my parents.