Very simple to print tea light. 

My only Caution is with REAL candles. If you are using tea lights that have a VERY thin metal casing, when the candle melts into a complete wax, it CAN slightly melt the bottom of the part under the candle. 

I HIGHLY recommend using LED Tea Lights with these. You could also test your luck with PETG or another HIGH TEMP filament. But no promises. Use real candles at your OWN RISK!!!