Hi Jennie - since you are going to only be working with plastic you should probably be fine using a handheld tool that will help you ream out the holes. If you are going to get a Dremel set - then be careful, because the heat generated by the Dremel could melt your plastic. Go to youtube and type in using dremel to make holes in plastic - there are a ton of videos you can watch that will show you exactly what and how to do what you want to do. :)
