Sippy cups are toddler cups with the lids. It is the cups that kids drink out of after a bottle and before a regular cup. Playtex is a popular brand of sippy cups. You can get them everywhere. Walmart in the baby section, most grocery stores, etc.
I have not made any...but there are sippy cups that you can buy where you can put artwork inside of the cup so that it is behind plastic...if that makes sense.
That does make sense thanks Unfortunately my travelling companions are 26 and 30 so not sure they'd appreciate them LOL Oh well, it's good to finally know.