I used to do it at school, when I never had any money really

A few other friends did it too.
We would go to the art store or somewhere and buy loads of glass and plastic beads and elastic, and I could make like 20 bracelets for a tenner. Then give them out as little presents to our friends.
My mum does home-made cards, has done for years, although I doubt it's saved her any money. She has a whole room full of little drawers full of card making stuff lol. Although her cards are awesome, I've had some great ones, even with musical bits and popups
