When Stan and the Jeff alien arrive on the spaceship, once Jeff announces that things must stop you can hear one of the aliens saying 'peas and carrots' repeatably. This is an old actors trick to blend into the background, and move their lips making it appear they're having an actual conversation, but can't be heard over the main dialog.
As Hayley and Roger approach Sinbad's ghost on the alien ship, the case behind them contains (among other things): a Klingon Bat'leth; the Sword of Omens from Thundercats; The Infinity Gauntlet from Marvel Comics; as well as what appears to be two lightsabres, Han Solo's blaster, and a Stormtrooper rifle.