NICE is a mod about decoration. It adds a number of fancy glass like blocks (cylinders and cube for now) that can be filled with four types of particle systems. This is the first version of the mod. More decorations are planned in the future. This mod is a cooperation between McJty and xVipstarx who does the artistic design.
Currently the mod has two blocks: a particle cylinder and a particle block. Each of those has two variants. A green and a blue one. You can craft these and place them in the world. To assign particles you can use wool (for smoke), diamond (for sparkles), water bucket (for bubbles), and fish (for fish).
As said before, many more effects are planned.