I use the receipt I get from the library when I check the book out. No danger of forgetting due date.

I use whatever is around… a receipt, a square of TP, a cat’s whisker once. I have a bunch of bookmarks but they’re never around when I need them (and I always forget to grab one when I grab a book off the bookshelf).

A sticker of cute dogs in space suits and the caption “we want fully automated intergalactic luxury gay space communism” because it reminds me of Ian M. Banks - also gets a laugh out of people 😁

Many years ago, I fell from the stairs due to a diabetic episode. I was kept in a coma for a few days. When I woke up I had this id bracelet on my arm. I still use it as a bookmark till this day.

Generally. Whatever piece of paper I have handy, even if that's a piece of toilet paper.

However, if it's what I call a "loaner" copy, I dogear. There's some books that I (for whatever reason) end up loaning out more than most, so I keep a few cheap paperback copies around. Those are what I reach for, for bathroom reading as well. Since I know they'll get loaned out and never returned, I just don't care about losing corners here and there. But I don't dogear big folds, just enough to mark the page. So if the section gets torn off, the text is still there.

I've had dozens of dedicated bookmarks over the years, and they disappear like bic pens and socks. So I gave up on them and just use whatever thin paper is handy.

Mostly receipts. I like their flexibility.

I use a joker from a deck of cards.

I'm using an old plane ticket to Milan

I have a probably too large and pedantic collection of cardboard bookmarks, some bought in remote cities, some given to me as gifts, some that went included inside other books. I even have a real chinese Yuan/Rembimbi bill that I got from a friend, long dead.

Sometimes I even use napkins and buy receipts and pieces of torn newspaper.

Book Darts! I’m typically reading for research and writing and the book darts are great for coming back to the right sentence when I’ve stopped off. I’ll leave them in long-term if I’m swapping between edited volumes—I’ve got a tin of 100, so it’s no problem if I leave a few within books here and there. I typically add one to the first page whenever a new book comes home. If I haven’t got one already placed or I start reading while out and about I dog-ear.

I fold the corner of the page that I stopped on.

I don’t. I just look at the page I’m on when I’m done reading and then open it to that page when I come back.

Some cardboard advertisement card I got with a shirt I ordered online.

Whatever I happen to have around me when I stop reading. Generally some form of paper, but I'm flexible.

Small sticky notes. That allows me to bookmark at a specific sentence rather than just the page.

I got a couple fancy plastic bookmarks with some books I pre-ordered, and I use those mostly now. Otherwise I just use the receipt from buying the book

A bookmark... one of these magnetic ones (although you need to careful; some of them are too thick and leave actual marks on the pages).

I have a bunch of magnetic bookmarks, I'm usung mainly them because thise don't fall out accidentally

@ModernRisk a drawing my daughter made on a ripped piece of construction paper. It was her idea to use it as a bookmark.

Another book

I don't like honest bookmarks as well. A proper bookmark should be mean-spirited and lie to me, so that I'll never find my place again!

I fold any piece of paper into one of those dog-ear corner bookmarks. I've got dozens around, made of everything from sticky notes to receipts to a parking ticket. They way I do it has a line going down the middle on one side that I use to show me which side of the page I'm on.

Combination of free bookmarks I’ve gotten from book orders and old Pokémon cards

I just place my books face down on the page I am at.

These 3d printed ones. https://www.printables.com/model/59453-bookmark-basic I use tiny prints to finish up the last meters of a filament roll. I've made tons of these and give them away.

I just have a bunch of bookmarks laying around from bookstores that I buy my books from, but I'll use receipts as well if I can't find any bookmarks lol

My wife bought a few sets of bookmarks off aliexpress. They look really good. Here's an example:

Here's the link: https://www.aliexpress.com/item/1005004921501847.html, but you can find tons of styles and models.

I laminated some of my duplicate Pokemon cards (don't use holographics as they heat up in the laminating machine!!!) and use those, now.

Kleenex, usually since I can never find my real bookmark. I seem to have left it in a book somewhere in my bookshelf...

I keep bookmarks whenever I get them, also picture postcards etc. I have some that I've bought, others I've made (e.g. knitted or embroidered). Mainly I use strips of thin white card that I razor off an A4 sheet.

Primarily, library receipts!