Twitter (not really an object but I've been a user and a super-fan for almost seven years now), planner, London Underground tube train.
Do you know what? I rarely use a pencil but when I do, I use a mechanical pencil just for ease of use (no hunting round for a sharperner) but I have a set of Field Notes Carpenter pencils - big, red and square and they have to be sharpened with a stanley knife. They remind me of my dad and his DIY projects in the garage as he always had pencils like this.
I've found my happy medium between a ballpoint and a fountain pen with my J Herbin rollerball. It takes real ink cartridges. The colour of choice is currently Lames de Cassis (a purple/grey) but I also use Lierre Sauvage (green) occasionally too. This is my everyday pen and I use it in my notebooks (therefore, my notebooks have to have pages that will hold ink really well). I always have a black fineliner at the bottom of my handbag... just in case.
I can't doodle to save my life and blank paper scares me so I have to choose screen. I'm a total screen queen at the end of the day but I've been finding out recently that more and more geek types (or those who are embedded into a digital life) are using the "analogue" ways of note-taking such as diaries or bullet journalling.
I've recently moved away from Filofax (that shocked a few people) and into a Traveler's Notebook style set-up. I downsized to a 'pocket' size set of notebooks which is how I found Pocket Notebooks. My favourite two styles of notebooks are now the Field Notes and Word. Notebook products. I use an adapted bullet journal system for planning and I'm an incessant list maker so I have a notebook just for that - this acts as a braindump type of place really. I go back to when I mentioned that I don't/can't doodle. My way of expression is to list or mindmap my thoughts.
Every day I'm discovering new items of stationery or new uses. I don't think I'm beholden to a particular country/continent but I think all stationery lovers have an affection for Japanese stationery because of its many themes and innovation. I think the UK is waaaaaaaay behind the rest of the world when it comes to stationery ideas and even making popular brands available. I'm grateful for places like Pocket Notebooks, Bureau Direct, Smiggle et al for being thought-leaders with their stock cupboard.
My own bullet journal hack is the best thing I've done but it does take time to create (I have to physically draw it out). A 48 page pocket notebook perfectly houses six months of my diary/daily notes system. You can see the first edition of this hack in my Stationery Playlist on YouTube. I also created a way to incorporate the Bullet Journal system into a Filofax. The video for that is on the same YouTube playlist.