These things kind of look like seeds or pinecones right? Well according to Cosmopolitan Magazine, these are much worse - they are praying mantis egg masses and you gotta get them out of the house before it's too late! It is literally a thing of nightmares y'all!
Best thing to do before you freak out, is get that bad boy tree out of the house and either call the place to tell them or buy a new tree! Or get a plastic tree too! Whatever works but do it fast!