How do I easily clean candle wax out of votive holders?

Freeze the candle holder and scrap or chip out the frozen wax

Put in microwave for 30 secs.

i use a butter knife to crack it then I use hot water to melt the rest

Pour in boiling water, let cool. The wax will melt into a layer that floats and once cool, is a disc you can easily pick up and throw away

I've put them in the freezer for a few minutes, the crack the wax with a blunt tip knife.

I place a layer of foil on a cookie sheet, then layer several sheets of paper towels on top of that. Place the votive cups upside down on the paper towels and place in warm (not hot) oven till the last wax glob drops to the paper towel. Remove cookie sheet from oven and allow them to cool slightly. Hold one in an oven-safe mitt and polish the inside with a couple of wadded up paper towels. They will shine beautifully and when completely cooled are ready for a new candle. Grab foil by corner and slide off cookie sheet! Clean and done.

Thank y’all for your suggestions! S Davis, your method worked best for my votives that are shaped like balls making the wax on the bottom too large to come out of the opening in the top. The other suggestions work well for votives with straight sides though. Thanks to you all!!!