Customers most agreed on the following attributes:
We bought the pack of 12 secret agent pens as party favors. The children loved them. [...]
The spy pens were a huge hit in the goodie bags at our recent spy party. Boys and girls (ages 3 - 9) all could use this and see how fun it is. The marker truely is invisible until you push the button and expose it under the light! There is also a fun small hidden roll of paper and the pen it's self is durable and designed well. [...]
Given as goody bag gift for spy party. Kids really seemed to like the gifts.
Purchased these as favors for my daughter's SPY PARTY. Everyone went out of their minds when they received them. I was told that a number of the kids took these pens to school for show&tell items. The parents even mentioned how awesome these were. The kids love writing secret messages back and forth. The hidden paper compartment & black light really push this over the edge on the cool scale. Thoroughly pleased with the purchase.
This is really some fun stuff if you want to be a bit of a sweet nuisance to your parents by spying on or sometimes "scaring" them.