One day, Charles wakes up with something sticking to his face. He pulls it off — it makes a bizarre, squishy sort of pop! as he does — and holds it out to examine it.
It appears to be a very small octopus. A very small robot octopus.
On further examination, there are no less than seven baby robot octopuses stuck to him — six more on his arms, and one on his neck.
*
"How did they get out?" Erik says peevishly, when confronted about this latest development. "They're supposed to be your present for the last day of Robanukah."
"...Er. Why?" Charles asks, which is when he remembers that gifset he reblogged on his Tumblr a few weeks ago. It involved a baby octopus crawling on someone's hand. Charles may have said something in his tags about it being the cutest thing he'd ever seen (#omg #this is the cutest ever #THE CUTEST EVER #look at its tiny legs #LOOK AT THEM).
Why is he not surprised that Tumblr hyperbole doesn't parse with that insane Erik logic?
*
It doesn't occur to Charles until the first day of Robanukah to wonder: if robot octopuses were meant for the eighth day, what did Erik get him for the first seven days?
He's almost scared to look at his Tumblr to see what other cute baby animals he's reblogged recently.
One robot koala, two robot doves, three robot cranes, four robot crabs, five robot rats, six robot tigers (thankfully, there are no lions. or bears.), and seven robot weresharks later, he has his answer.