What can I Sell as a 14 year old?

I want to make around 80 quid, so I can pay off my debt to my parents :/ and I wanna sell some stuff I might have. What can I sell though? I havr a loada games, hence the reason I'm in debt, but I don't wanna sell them. I'll also make things to sell, bearing in mind I'm aboy ;) I'm pretty good with computers, but don't wanna fork out for new software.