Materials:

• 1 pound of soy wax flakes
• 1/2 cup of dried coffee grounds
• 2 candle wicks
• 2 glass jars (As a general rule of thumb, you'll need glass jars that can hold about 8-10 ounces of wax to make two medium-sized candles)
• Wooden skewer or chopstick
• Double boiler or a makeshift one (e.g., a heatproof bowl over a pot of boiling water)
• Wooden spoon or stirrer
• Essential oils (optional)

Instructions:

1. Begin by preparing your work area. Cover your workspace with newspaper or a tablecloth to protect it from any spills or drips.
2. Melt the soy wax flakes in a double boiler or makeshift one. Make sure to use a heat-resistant container for melting the wax. Alternatively, you can melt the wax in a microwave, following the instructions on the packaging.
3. Once the wax is melted, add coffee grounds to the mixture. Stir well with a wooden spoon or stirrer until the coffee grounds are evenly distributed in the wax.
4. Add a few drops of essential oils, such as vanilla or cinnamon, to give the candle a pleasant scent (optional).
5. Place the wick at the center of the container and hold it in place using a wooden skewer or chopstick. Make sure the wick is centered and straight.
6. Pour the melted wax and coffee grounds mixture into the container slowly, making sure not to spill any wax outside of the container. Fill the container to about ½ inch below the top.
7. Let the candle cool and harden for several hours or overnight. Trim the wick to about ¼ inch above the wax.
8. Light the candle and enjoy the coffee aroma as it burns.

Note: Adding coffee grounds to the wax can create a slightly uneven burn, so keep an eye on the candle while it's burning and make sure to trim the wick regularly to prevent soot buildup.