Naturally this donation doesn't make sense to me why because is very simple thing, we can all handle it by exercising love where we could share a gift such as Pen, book, T-shirt or whatever maybe could be foods around our neighborhood. At least anyone here on this forum can afford a plate of meal to his or her neighbor after which they can take a selfie with those people or person, possibly there could be a note on it like "Happy to see Bitcoin on $100k, A meal to a neighbor".
Anyone who wishes to spend millions can go on their own to spend it or possibly donate to some local school around them with their personal funds since I believe there are poor persons in every nation around them or their street and state. But making a donation here doesn't go well with me since we can easily cook food and share with our neighbors.
Okay what about those who are not earning any money here how would they be able to donate $100 as you said, but at least almost everyone here can afford a plate of meal to their neighbor and take selfie to upload it here using talkimg.com designed by our forum brother @joker_josue or they can upload it on any social media then copy link and post in this thread for people view them and see how the love are being demonstrated.
Please note that similar things has been discussed over the other forum, so this idea came from there and I think is a good thing to also emulate as well, although it wasn't on bitcoin price entirely but on their native currency.
The purpose of my threat is to spread the celebration of Bitcoin reaching the milestone of $100K among Bitcoin users as well as the general poor people. I would discourage you from taking a selfie with someone after helping them and publicizing it in the media. Donate for the satisfaction of the creator and receiver. But yes you have full freedom, to donate your money or not, to whom, how. It is your personal matter. But I invite you, if you can, share happiness among people.