First, I'm sorry that someone stole your stuff. I park my bike in my shop and had never had any trouble. Then, my rear blinker disappeared. I didn't think about I but my front light was pointing downward. After thinking about it, I even have problems getting it off. For awhile I rode without a blinker. Mine mounts in a piece fastened to my rear rack. Then it started getting dark again. I was fortunate to find an old blinker that most the LED's worked on. So I put that on and it too disappeared. I don't like thieves and I need a blinker in the dark mornings. So I Bought one and got an alarm as well. I liked the alarm so much, I bought one for my other bike. I put mine on my seat post. I also zip tied my blinker, but that's because it doesn't fit the mount the way the old one did. As soon as I have to put new batteries in it, I have a new blinker that will fit tight.
https://www.amazon.com/Wireless-Anti...sr=1-1-catcorr