I know we are a large format forum but I am sure you must have other formats.
I have in my collection
Bessa RF 6x9 (Heliar lens)
Bessa 11 6x9 (Heliar coated lens)
Mamiya 6 folding camera 6x6
Rollieflex 3.5f 6x6
Fujifilm GA645zi 6x4.5
Kodak box brownie
Pentax Lx
Plus my Chamonix 4x5, 150 & 90mm lens
Zero image 6x6 pinhole camera
I use them all from time to time and enjoy them all, the easiest to use is the 646zi, fully automated with a superb short zoom.
The the folders, Bessa and Mamiya 6 are not blessed with great viewfinders however you get used to them and they produce great images and very pockatable.
My favorite is the Rollieflex, the Planer lens is amazing, I use for night shots, produces hardly any star burst on lights, lamps etc
The LX is a great camera, big viewfinder, the metering is very special in this camera and works flawlessly,
The brownie was my first camera and still works it must be near 50years old
The Zero image pinhole is quite superb, love it.
What if any cameras do you own, film of course
Oooer . . . hope this doesn't develop into a Trump-style 'my bomb button's bigger than yours', but I too have something of a collection, from 5x4 down. Well, it's a museum really. Most do get used, and starting at the top:
Crown Graphic 5x4 with 150mm lens, 6x9 rf back
Mamiya Super 23, 100mm f3.5, 150mm f5.6, 6x9 rf back, screen finder
Mamiya RB67 Pro SD, various lenses & backs - ex CID forensics
Hasselblad 503CX, various lenses, backs and finders
Mamiya C330 Pro S, various lenses
Rolleiflex 2.8E Planar
Nikon F, F2, F3, F4, F5, F6 and Nikon D800 - lenses from 15mm to 600mm manual & af
Canon F1 with 24mm, 35mm, 50mm, 85mm, 135mm and 180mm lenses
Leica IIIG, M2, M5, M6, 21mm, 35mm and 50mm glass
Pentax LX, screw and K-fit lenses 15mm to 200mm
Then there are a couple of dozen Pentax bodies from SV to Spotmatic II and Electros
The rare autofocus body and 35-70 zoom lens - world's first autofocus camera and lens
Then there are a brace of Edixas (the first SLRs I worked with), a very nice Exakta II with some nice Schneiders, and my very first serious working camera - an Altix N with 35mm, 50mm and 90mm lenses, all of which are excellent.
I got this when I was 14 before I went to art college and used it for a photo-feature which was published nationally and set me off on my journalistic career!
Oh, I nearly forgot . . . Kodak No 1 complete with brown canvas cover, and one of those jelly mould bakelite Brownies complete in presentation box with an unused roll of film.
And they're being added to shortly by 'the Hogwarts Camera' . . . the Argus C3 'Brick' as seen in the eponymous movie. This is a complete pack with the flashgun, Argus meter and various bits including user manuals. Bought for the collection because of the movie link, and also as it was - and remains - the worlds most widely sold 35mm camera at nearly three million units.
I also recently acquired a used Fujifilm X-Pro1 as an always-available camera, and while it does produce very high quality images, I've not found it easy to use in viewfinder mode, as there is no variable correction in the eyepiece. There you have it - and if anyone wants a Pentax, contact me!
PS: My great grandfather is to blame for inflicting me with the shutter virus - he was a semi-pro snapper in the late 1800s - Edwardian era and had everything from a quarter plate folding reflex to huge 11x14 stand cameras. One of his commissions was to shoot all the regiments of the Imperial Army at Queen Victoria's Jubilee review at Alexandra Palace in 1897 - there were several albums of these which my grandmother kindly disposed of along with two large trunks full of plates and his cameras. I did manage to save three or four of the albums and some others with his work - he did occasional stuff for the Daily Sketch! Sadly, after I got divorced, my ex-wife apparently also disposed of these. I believe The Imperial War Museum does, or did, have the complete presentation set.