Stuck for a start for that new journal, or just ideas to fatten it up? Try:

• Sensory Journaling: Document your day focusing on sensory impacts - sight, sound, smell, touch, taste, the inexplicable.
• Mapping: Mark your day by mapping it, key moments, locations, marking with symbols or colours to represent events, emotions, etc.
• One Word/Line: Summarise your day in a single word and/or sentence.
• Collage: Using print media that have impacted you, ticket stubs, receipts, photos, etc. that you collected throughout your day, document your day. Add captions or doodles.
• Gratitude journal: Write down one thing you're grateful for each day, and make an arrangement of them at the end of the month, year, etc.
• commonplace book
• ephemera
• hobby notes - reflections, keeping track, etc.
• five word stories
• six word stories
• adulting inventory
• alphabet and word games
• alternate perspectives
• apocalists/bucket lists
• book - lists and reviews, reading notes
• book excerpt of the day
• brainstorming book
• business planning and management
• collections - chronicles, photos, notes, plans, wants
• concept maps
• constrained writing projects
• creative and other challenges
• creative writing
• desert island lists
• doodles
• draw something each day that represents an aspect of your day or how you're feeling
• dream journal
• event planner
• everyday reference book
• favourites of any kind (or even things that aren't)
• finances
• fitness planner
• free-writing
• fun activities to do on a rainy day
• future logs
• goal of the day
• hand-lettering and calligraphy practice
• health/medical notes
• highlight of the day
• home projects
• home town tourist notes
• ideas journal
• junk journal
• keep a personal lexicon, because who doesn't make up their own words sometimes
• keep ticket stubs, receipts, small mementos, or other ephemera from your daily travels, and include reflections if you desire
• keep track of your earworms or daily favourites
• language learning notes
• lessons learned
• life admin tasks
• life assessment
• life data/book
• life hacks
• list book
• local history notes and memorabilia
• long-term collections journal
• looking forward to
• magazine clippings
• make lists of various things - books you want to read, places you want to visit, or things that make you happy
• make mini collages using magazine cutouts, stickers, or other ephemera that you collect throughout your day
• master grocery list
• medical notes journal
• memorabilia
• memorable moments
• memories and memorabilia life data
• memory of the day
• micro-stories or poems
• milestones
• music - lyrics, reviews, notation, creation
• networking, work, and professional development
• notes
• one word and/or sentence a day
• paint chip journalling
• pass-the-parcel journalling
• photo album
• photo of the day
• picture diary
• project planner
• purchases and shopping lists
• purge pile
• question of the day
• quotations / affirmations and your thoughts/reactions to them, quote of the day
• random thoughts
• reading journal
• reflection prompts
• reflections
• samples
• scrapbook
• someday list - things you want to do or achieve but don't have a deadline for.
• song lyrics or playlists
• song of the day
• soundtrack of the day
• story ideas
• stream of consciousness
• swatch journal
• textures and fabrics
• then and now
• things you'd like to invent or have invented
• things you've borrowed
• throwback memory
• time management and scheduling
• to-do (tomorrow)
• undo list - bad habits as goals to hopefully break
• unsent letters
• use colours to represent your moods and emotions each day. you can do this randomly, with images, or create a pixel tracker such as bullet journallers use
• use mind maps to explore your thoughts, goals, or plans. this visual approach can help you to organise ideas without lengthy writing
• voice notes
• what I'm looking forward to
• what made you laugh
• when did I last
• wins and lessons
• wish of the day
• wishlists
• word of the day
• words to learn/look up
• work journal
• write down three things you're grateful for each day
• writing planner/prompts/challenges/notes
• yearly collections journal