Have a seventeen foot long, multicolored, wool, knit scarf (curly wig not included) and a bag of jelly babies.

Remember to use them IRresponsibly.

But asides from that, welcome, fellow Animorphs fan! Have a furry velociraptor!

Talk about a rare fandom!

Usually, I'd rummage through my bag of holding for a gift, but in your case, let me give you a link to some goodfic (assuming you have not yet read it):
Here are the fics The New Dawn and The Kelbrid Wars, which take place after that annoying cliffhanger that K.A. Applegate closed the series with! I hope you enjoy them as much as I did!

Have a cookie.

Seeing as I've only been a member myself for a little under a month, this would be our first meeting.

Lovely to meet you, my good sir or madam!

Have a jug of apricot nectar and this cubist portrait of John Quincy Adams.

-- Len

In honor of your joining (or possibly rejoining), have a toaster! It's polka-dotted in Suvian colors, and shoots pastries at high velocity!

Here, take a Time Vortex Manipulator so you can go back in time to smack your past self for embarrassing you. What, there are time rules against that? Well, then, I suppose you could always just embarrass your past self behind the scenes. Your most humilating moments can now be attributed to an angry future self irritated by your past self's fanfiction!

And, just in case, here's a muffin of your preferred flavor from the welcome-back pastries table!

Welcome to the Board! Have some of my world-famous hydrophobic water to commemorate the event. Most definitely not one of the reasons that some Discworld angels rise up, rise up.

Hi!

Here, have an Infinite Notebook (lined), complete with urple covers and wilver binding! In the two months or so I've been here, it's become my favorite gift.

-Aila

Greetings, new friend! Have a singing sword!

Darn greasemonkey script. I always forget I've got it on.

So, I guess you make lyrics or something, if you have the muse?

As a gift, I offer you virtual set of angklung. It's clickoty-clock sound is bound to soothe any monster with a passion for counting.

-I mean "Welcome back to the PPC!"

I've been on a Puella Magi kick lately, so have a grief seed. Handle with care.

As a re-welcome gift, please for the love of all that is sacred take some of these BleepNerds, I am literally drowning in them.