Glass jars and/or teacups
Battery operated candles
Hand cut paper hearts - you can use vintage books, old maps, love letters, cardstock, or whatever else you'd like.
For simple luminaries:
Place lighted battery operated candles inside chosen glass containers. Fill with plastic gems until the "flame" portion of the candle has been covered. Leave as is or add to them in the following way...
For doily heart luminaries:
Before filling glass jars with gems or candles, wrap a doily or two around the outside of your vessel. Tie it in place with a length of baker's twine or any twine/ribbon that you like. Insert a hand cut paper heart beneath the bow. You could use a page from an old book, or any other kind of paper that you like - or maybe even stiffened fabric! Fill with lighted battery-operated candle and gems.