How do I get my baby to like a sippy cup!?!

Marisa • Momma to Rowan Maverick born 10-5-16 & Rhen Mason 11-28-18 💙

My son turned 11 months yesterday and I've offered a sippy cup to him since he was about 5 months old. He has gotten better with one.. but normally he only will take the tiniest sips of water at a time and then throw the cup off his high chair. We've tried a few different kinds too. I've even tried giving him his formula in one and he wouldn't have it. Any advice?