Supplies needed:
Shoebox
Toothpicks
Elmers glue
Lead sinkers
Spray paint
Glitter--optional
2 part epoxy (I use the 5 min. setting stuff from walmart 2$)
Paint brush
Take your shoebox and cut off the top rim of the bottom section of the box, you want to expose the corrugated inside of the cardboard. Next take the glue and put some on the end of the toothpicks, now insert the toothpicks into the gaps in the cardboard. I left about 2 in between each one. Let this dry for a few hours before you proceed, if you don't the toothpicks will just pull right out.
should look kinda like this:

After the glue has had time to dry you can begin placing your lead sinkers on top of each toothpick
like so:

Now for the fun part. Go to wherever you can and get the absolutely cheapest spraypaint that you can find, but try to find colors that match your favorite plastics, for me that was a "bass" green, and black.
REMEMBER: do this in a well ventilated area!! Using a sweeping motion back and forth put about 3 coats of paint onto your lead sinkers. Make sure you cover the entire sinker!!
here's a few with the green applied:

Now that you have the lead sinkers painted you need to ensure that the paint will stay on, heres where the 2 part epxoy comes into play. Mix up some of the epoxy and brush it onto each of the lead sinkers again make sure you cover the entire sinker.
If you want to be fancy you can mix in some glitter with your epoxy and get a different kind of finish.
Here I have one black and one green with silver flakes in the epoxy:

In total this project cost me $15.80, and I purchased everything but the shoebox!!!
So don't spend lots of money on the pre-painted sinkers, do it yourself and save!!