For me I'll say my phone and my 5A type C to type C charging cable. I know it sounds hilarious and cliche because everyone finds their phone special I believe they do even if it's replaceable, but I do have a sentimental attachment to my handheld device because to me it's not just a communicating device, it's more than that and as of the moment if I was to lose it I can't replace it and the means to my livelihood is gone along with it because it also happens to be my work station as a trader.
I do not care much for it as a communicating device because I don't even like talking to people just a selected few I tend to keep my circle little and even those in my little circle barely hear from me. For entertainment my phone is all that I need from; podcast to books which i cherish, music which is very very important to my being sane, movies used for killing time, games although I don't game often, and selected social media spaces it's my go to. My notes app where I write with my S-pen, my journal, my trading tracker on Notions app, my routines, my reminders i basically do everything digitally and virtually possible on it no matter the heavy duty task this bad boy can handle it.
There was a time when my phone got bad I was demoralised for the two days that passed that I couldn't do nothing with it. It felt as though someone died, yeah a part of me actually died, 40% of me died it was devastating, I had to even borrow the money for the repairs because I had no access to my money remember I said everything is inside the phone, I don't like keeping money in my bank so like the ATM cards with me are basically useless so anyone who steals them would be raining insults at me later on, what I normally do is make a transfer to the card and pay for purchases but with my phone under the knife I was like a man in the dessert with no means of getting water.
My 5A charging cable is one of a kind, I don't share it with anyone someone else can only use it without my knowledge, it was made specifically for my phone, my phone selects cables a lot Samsung have this thing where they let you know if a cable is bad or slow I tried like a bunch of cables this was the only one she would let slide in and accept to charge her battery so I protect it with my life because somehow for now it's irreplaceable.
Hopefully I will get something else of significance maybe a gift from someone special that I will cherish very much and place a very high value on but for now nothing beats my phone and 5A type C charging cable.