How about this?

A stuffed red glove giving the finger to an angel.

What christmas tree?

My what? We don't support either killing trees (even ones grown for the purpose) or plastic house sculptures in our living space. There are more productive ways to celebrate the season.

anything you want.
I love lighted white trees for showing off ornaments, but it's always been everyone else to put the tree up. I'm a slug about it. Used to be a tradition late dh's family to "find the pickle" on a green tree.
Well that tradition crossed my mind the other day when I saw a white glass "sperm" ornament. LOL
"Find the wiggly thing kids!" / jk sorta

Sexy shirtless Jesus posing with his hands behind his head. Of course.

An outdated smartphone to symbolism the consumerism of it all..

What tree? Nothing, I guess...if I had one, a bow...

I have a weeping angel from Dr. Who as my tree topper. It works ! My tree is a mix of Star Wars , Star Trek, and dr who ornaments. Just don’t blink.

Proper atheists don’t have Christmas trees—they have Yule trees. A star is a perfectly reasonable adornment for a Yule tree. Stars evoke wonder, awe and beauty. No one has a patent on Stars.

You assume wrongly that I have a tree in my house.

I haven't put up a tree or decorated for Christmas since my divorce. 10 years, I have always hated giving gifts on a particular day, I still get gifts for my friends and family, but I give them when I feel like it. You have to think outside the box to deal with the BS.

I don't put up a tree , y would I ?

A pentagram.

A tree topper. Are you new to this Christmas tree thing?

I have a Christmas fairy on top of my tree because I like dressing dolls. Here in Spain even totally non-religious people set up complex nativity displays as detailed as model railway layouts simply for the fun of doing it. They are cultural catholics but when you talk to them they don't really believe anything.

I don't have one this year, but I can see plenty of conifers out of my windows. Right now they have snow on top. That looks nice.
What if we invented stuff you sprayed on Xmas trees and it looked like snow?? We'd be rich!

My ? lives in my Harry Potter closet under the stairs.

We had a kewl star for awhile, then got a neat santa treetopper.

I thought this was a joke!

Or...

A star!

This is mine.

Why put anything on top of the tree? Why not let it reach for the sky unhindered?

While growing up, we just had an ornamental tree topper, no star or angel. When my kids were little, we would sometimes make a topper out of paper. Now, I don't usually have a tree at all, and if I do, it's just a tiny thing, no need for a topper. I try to keep them green and living, not stunt them. Unfortunately, I don't have much of a green thumb.

I’m sure most of us put the same crap as everybody else.....