something that you have in your mind for example idea.
I am assuming a notion to quilt. If you heard someone say they have a notion to quilt that could mean that they are wanting to make quilts, or want to start quilting etc. A quilting notion is...
Notions are things such as thread, elastic, zippers, lace, bias tape, etc. Basically the accessories you will need while making the project.
Efficiency = quick and effective way of managing time and resources.
I can give you several sentences. I have a notion to give you a piece of my mind! That's a good notion. The store sold notions and dry goods.