Ghostplay didn't participate in allat, he was the one taking the secrets on who did what.
Paperat: An eraser, gifted by Peanut. She normally draws on computer, but to warm up, she often uses paper to draw. And she is prone to losing her stuff. So, it's half a help, half a joke.
Altseer: A pie to the face, gifted by Nightplay. A prank.
Nightplay: A bucket of water on his head, gifted by Altseer. Instant karma.
Lightplay: A plushie, gifted by Paperat. Lightplay loves plushies (and that is one of my traits, too), so it was fitting. Turns out he had sparkles in his eyes when he saw that plushie.
Peapboy: A satchel for his tools, gifted by Mike. The workshop he's living in is also a repair shop that he holds, and when he has to go out, he doesn't take his tools, which means he has to go back, grab his tools and the repair. When Mike saw that at Hotlantis, he knew it would be a perfect gift.
Mike: A Deezer Premium subscription, gifted by Lightplay. Seeing as Mike loves music, this was the perfect gift for him.
Peanut: A special pair of Studio Headphones, gifted by Peapboy. I forgot to mention this, but Peanut has had her viewing and hearing senses upgraded ever since she was sanitized, and she was unsplattable in battles. So, to counter that, the SRL decided that she should only use sound muffling Studio Headphones that they created. At least, it makes it a bit more fair for everyone.
But for battles other than Splatsville's, Peapboy decided to create special headphones that could make the sound pass more or less.