The Jedi food capsules are easily made... but Staedtler Liquid Roller Pens that were used in EP I and II are becoming harder to find. I have heard that they are still available at Staples. Any amount of food capsules is ok... unless you are trying to duplicate a particular Jedi costume, then you would have to have the amount and color combinations of that particular Jedi.
Three Jedi are seen carrying food pellet capsules in Episode I.
Figure 1: Finished Food Capsules
Figure 2: Staedtler Liquid Roller Pen
The first thing that you will need to do is glue a “hemisphere” to the open end of each pen cap. I used a two part epoxy glue. Make sure to let it dry thoroughly. After the glue is dry, you can take fine sandpaper and scuff the entire surface a little. Apply several thin coats of primer (I use gray) to the entire capsule... be careful not to apply primer too thick or you will get nasty runs! If you do get some runs, let the primer dry again and sand the runs. After the primer is dry, just apply several thin coats of whatever metallic paint that have chosen. I have also added a clear “sealer” coat after the color coats, but some of the metallic paint “bleeds”... so do a test of your metallic paint on a scrap piece of plastic first. Take your time with the painting! Apply thin coats and let dry completely between coats. You can choose to paint the pen clip or not... I have done it both ways and it doesn’t really matter either way.