Materials you need at home:
- remains of cotton yarn (i.e.Philcoton 3 from Phildar) of several colors,
- a size 2.5 crochet hook,
- and one sewing needle (to sew some parts together and weave in ends).
NB : Any thinner or thicker type of yarn (cotton or wool) can be used with matching crochet hooks. So doing you can get flowers of different sizes and aspects.