Here's the gag, it's a high quality pink eraser but we had it imprinted as a "paper-smudging device". As you see, it is perfectly capable of cleanly erasing.
We have these priced so low, some buy them for geocache trinkets, or even nerd party favors. Mainly they are just handy to have around. It's a Restless Mouse exclusive- no one else has these, we were the only ones silly enough to do it. While supplies last.