How can i make my hair extensions full of body and movement?

i have extensions, there 18inch.


the only way i can wear them though is straight or curly or wavy.


i want to not have them wavy, but not stick straight, just some movement if you catch my drift.


i was thinking velcro rollers?


any other suggestions?How can i make my hair extensions full of body and movement?
Volumising mouse does wonders. Any brand is fine. Run it through your hair roughly with your fingers. It adds volume and body. Just be careful if u use a heated curler, it dries out extensions so badly, it will take weeks to get it back in good condition.