[ipodlova]

yup, its a screwdriver

 

[eyevancsu]

If all you have is a screwdriver, you could go to an extreme and use your soldering iron to make the holes. The excess melted plastic that piles up can easily be removed with a blade and the holes would come out nice and round. It could damage your tip, then again it may not.

ivan c.

 

[HiGHFLYiN9]

Your local hardware store should have small battery powered cordless drills from $15-20 (think 7.2V-9V). Not much power but probably enough for small jobs.

 

[aerius]

If you have an x-acto knife, you can stick the point of the blade where you want the hole and slowly drill it out by spinning it around. You can also do this with a small sharp knife with a thin enough blade.

 

[myself, aka me]

You can probably drill them by hand. Use a knife or something to centre the hole then just drill twiddling the bit between your fingers.