Inworldz and other openSIM grids have a weakness in that any changes to objects sends messages to all viewers in the region no matter how far away they are located. Normally this is not a big issue, but when one has several hundred objects changing their attributes every second or so, it can cause a lot of viewer bandwidth to be eaten, which for many people will appearas moderate to severe lag.
I create a box containing several christmas blinking light bulbs. They are full perm, a gift to the community. The scripts in them are also full perms. All I require is that you keep these free. Do not sell them. Do not repackage them and sell them. They are meant to be free, always. Please share them.
This is how they work. The bulb is a simple sculpt with a texture half black / half white. The script uses texture animation (a viewer-side effect) to run a 2-frame animation of black and white. The bulbs can be colored however you wish. The script changes the rate of the blink roughly once every 10 - 15 seconds to randomize the blinking rate, making the bulbs, when next to each other have a nice sparkle effect.. This is low enough to keep the viewer message down to an extreme minimum.
The box may be found at my store next to the TV.:http://places.inworldz.com/Ardhon%20en%20Ceredir/54/116/315http://slurl.com/secondlife/Ardhon%20en%20Ceredir/54/116/315