A USB flash drive: they all come in different shapes and sizes, but we need one with a loop hole. I use this one from SanDisk
Neckace chain or cord
Optional: a pendant clasp if you want your USB to face a certain way
How to
Plug in the USB to your laptop or phone and fill it with your files. It can be anything that reminds you of someone you love or a perhaps an (un)remarkable moment.
Loop the necklace chain or cord through the hole in the USB.
Wear it around with you wherever you go, except maybe to the shower or the beach
file ideas
A .txt file of your favorite poem
A folder of recipes passed down by your family
A .jpg image of you and your partner
An .mp4 video of a sunset you witnessed
An .dmg or .exe installer of your favorite desktop software
A .txt file containing a link to your website
A .jpg image of a sunset you just witnessed
A .png screenshot of the notes of the perfume you're wearing according to Fragrantica
A folder of .flac files of an album you bought recently
An .mp3 file of a DJ set you ripped from SoundCloud
A .jpg photo of your pet
An .epub of a book you loved growing up
An .md file of your holiday wishlist
An .html file of a Wikipedia page about ankylosauruses
A .docx file of instructions on how to glaze a ceramic bowl
A .xlsx spreadsheet of your upcoming trip's itinerary