I came up with several ideas for the hearts. I asked on facebook to see what people thought of the hairpin idea or maybe making a bracelet. Some didn't think the size eliminated the possiblity of earrings. I also played around with more thread sizes to see how they turned out. The simplest option was the largest size thread I had (size 3 crochet cotton) as a pendant and the 20 crochet cotton ones as earrings:
Simple but effective, I think. I like the set, but if I can do simple, the next step is always going overboard. I used a couple more of the size 20 crochet cotton hearts and one made out of size 10 together with swarovski crystals, chain, and some eyepins to make a necklace.

I really like this. I think tomorrow I'm going to make a bunch of the size 20 hearts and try a bracelet and see what the pattern looks like in size 80 tatting thread. I also need to take some better pictures if the sun decides to peek out so I can get these babies listed on etsy! I'm feeling amazingly motivated lately. Let's see how long it lasts.