DD wanted a "cool" pen, it was a light up I got at a card and party store (not sure how much under 5 for sure!), you twist it flashes red/blue, you push it writes...
it was a little thicker than the standard ball point pens I have in my purse, and I had read that the charcters needed a "thicker" pen to hold on to... and at the hotel (Poly) where I bought the autograph book, they asked if I didnt want to purchase the pen also (I held my breath and said no thank you)
I loved that flashing pen!! It was a great thing to spark interaction with the characters and DD!! Lilo and Stitch in MGM, it was such a hot day... and Stitch had the funniest interaction...
We went to an Enights, late, dark, and short lines, and the flashing pen at night was a great hit!!