Using a simple fairy light bought from a supermarket, single crochet all along the wire. Be careful near the bulbs where crocheting is a bit tough. After round 1 of sc, you can choose a stitch of your choice for 4 more rounds.
To house the battery holder, I used a stalking. You can get innovative an try other types of housing.
I hang it in the wall n light it up at night. It can be hung on doors or windows.
Hope you all liked this idea. Enjoy!!