Gel Candles help & question

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I bought these wonderful scented gel candles (see photo). The problem is... they were in glass jars and looked like large candles, however, then they burned down, at least half of the gel is still there. They had these hard clear plastic cup things inside of them (you could not see them when the candles were new) which was the actual candle, all of the gel on the outside ot that cup is a waste. So, thrifty me had this bright idea, and was wondering what you thought of it. I take the platic cups out of the jars. I place a small unscented candle maybe the size of a quarter in the middle, and fill the rest of the container with the remaining gel from all of those candles that wasted so much of the gel. Would that work? Or would it be a big mess?