I spotted this sea shell wind chime earlier today. It reminds me of what I used to do when I was a teenager. I used to collect a lot of sea shells from the shore and make all kinds of toys. And wind chimes were my favorite. I hang them &
DIY Yarn Wrapped Jam Jars - it's a good idea for the tunnel just to light the way. A solid row of these along the sides of the tunnel would be a good alternative to using whatever lights are built into it.