Sewing: Ideas for temporarily holding fabric together

When sewing or doing craft there are many ways to stick/baste things in place until the final sewing is complete.  Here is a short list.  Hopefully viewers will write in some ideas to add to this post. Obviously the crafter will know which of these could suit his or her project:

pins
sticky tape (scotch tape)/ two side sticky or one side
blue painter's tape
hair grips of various sizes and shapes
large hair grips to attach to excess fabric collecting around embroidery frame
temporary stabilizers with sticky back
clothes pins (pegs)
simple large tacking stitch by hand
paper grips (those used to hold a ream of paper or smaller amounts of paper depending on thickness)
safety pins
paper clips

Send some more ideas in the comments section - we'd love to hear from you.