Easy is such a relative term, but here goes.
Get a cheap pair of pliers and remove the temper in the steel. Take
a round bur slightly smaller than the bead you will most commonly
drill and cut indentations into the jaws at the end. Wrap a rubber
band around the handles just tightly enough to secure the bead
without deforming it or allowing it to spin but not so tight that
it’s hard to pull apart the jaws to release the bead.
You can secure one arm of the pliers in a vise, an engravers block
or whatever contraption you dream up. This will give the hand you
normally have to hold the pliers with a rest, which is helpful if you
have to drill for long periods of time.
When you first put the drill to the bead, start slow and steady.
Keep an eye on the speed of the drill; too fast and the drill will
quickly mar the bead if it strays, too slow and it won’t bite the
metal enough. To maximize production I usually drill a few hundred
beads at a time and it’s too time consuming to use a drill punch.
You’ll have to practice to get the hang of starting the hole without
marring the surface, but the pliers will help protect a good portion
of the bead from the drill if the drill begins to stray. If you do
enough of these you’ll get the hang of it. Keep the drill well
lubricated and sharp. Have fun.