I had no tools for my first box, just a lighter, a flat head screwdriver, a nail, and a soldering iron. So I know how you feel.
But then the other day I heard about this store a few towns over called "Harbor Freight Tools".
I picked up this little POS:
Chicago Electric Power Tools - 12V Rotary Tool Set with 30 Accessories $4.97
I wouldn't use this on anything but this cheap plastic. Thing bogs down on plastic sometimes. But its so cheap, I don't care about destroying it. Its less than $5 LOL
Its good for sanding/melting plastic. I used it to make all my holes on the boxes and flashlight.
I bought the same one when I stopped in Habor Freight and seen them. Couldn't pass them up. They also had a 249 piece roto tool accessory kit for $14.99 that I got to go along with it. Really amazing prices. $20.00 for a roto tool and hundreds of roto devices to use with it.