The US store Costco currently has 8-packs of “Life Gear” brand colored LED glow sticks for something like $20. They’re a bit larger than it seems like they need to be, but otherwise seem like a good value.
They are a bit unusual in that they have a flashlight on the opposite end of the glow stick. As expected, it’s a probably 6500+ K cool white, so I immediately started replacing them with warmer, high CRI LED’s. My kids are definitely enjoying them.
Here’s three of them with the flashlight end replaced with a rngwn 2300K, an rngwn 3400K, and a Yuji 5600K. There is a cheap reflector around the LED that causes a slight lopsided hotspot, but overall, the replacement LED’s are a huge improvement.
It took me a few minutes to figure out how to get them open. A screw locks the diffuser in place, so children won’t accidentally access the button cell batteries. The lens on the flashlight end seems to be glued in place, but it turns out a solid tap of the head against a hard surface will cause the entire light assembly to drop out the other end:
