I used this light: 
[https://www.amazon.de/dp/B0B2WKN4PY?ref=ppx_yo2ov_dt_b_fed_asin_title](https://www.amazon.de/dp/B0B2WKN4PY?ref=ppx_yo2ov_dt_b_fed_asin_title)

As a powersource i am using a 20000 mAh powerbank that i attached behind my surround.

I didnt make a full ring because its easier to pull out the darts for children. But you can make it a full ring if you want to.

If you are done printing all the parts put some superglue in the individual ring pieces, and glue the ring to the arms. Its better to sand the joints down a bit because its a very tight fit.