How many bench cookies are enough?

3d printing them myself makes them around $0.90 per cookie. Do you use a bunch of them or just a few?  I have never used them.  Recently, I printed a bunch of painting triangles.  They are used to lift a piece from the work surface during a painting or finishing process.  Any drips on the edges will drip off and not stick the piece to the table.  Triangles are good for lighter pieces.  They don’t hold the piece in place.  There is not any friction.  Here is where the cookies show their strength. 

Shown below are a few cookies.  Soon there will be some rubber circles glued on the top and bottom of the cookie.  This will hold the piece still and also hold it up from the table.  A key is to not put the cookies on the edge of the piece. Let the piece hang over by pushing the cookie under an inch or more.

How many bench cookies are enough?  3d printing them myself makes them around $0.90 per cookie.  Do you use a bunch of them or just a few?
from Instagram

Dowel Jig and Bench Cookie.

More #3d printing. Top is a dowel jig and the bottom is a bench cookie.
from Instagram

I have been 3d printing many things.  It seems there isn’t a weekend that goes by where  the printer isn’t melting plastic.  Usually, I am downloading objects from Thingiverse that help other projects.  These are two things that I plan on using.  A dowel jig can help align glueups.  It is a simple jig to clamp on a piece of wood and use a hand drill to make a hole for a dowel.  The other piece is a bench cookie.  It holds a piece of woodwork off of the bench for sanding and finishing.  These are new to me and we’ll see how well they work.