A Simple Napkin Ring

You may have lunch or dinner invitation, but you may haven't some
  of hospitality requirements and accessories

So in this case, you should use the raw materials
In your house ..
Here is how to make a napkin's ring easily..

First, we get a colored ribbon and roll it on the ring

After that, we get plastic flower and leaves for decorating the ring. 

Then paste the plastic leaves and flower on the ring by a silicone gun.