This is revolutionary, thank you. I don’t speak Italian but I know a few words from playing classical music (that’s one of them!).
For some dark reason, I personally love how 暗殺 (あんさつ) sounds. It is so fitting.
I know there are lots of other words I like for different reasons, but I can’t name them off the top of my head right now.
Edit I just remembered how I also love 確かめる (たしかめる) and variants of the verb like 確かに, etc. The rhythm and sonority of it hook me all the time.
みゆき族, this word is so awfully specific.
Maybe, 諦めないで sounds like, don’t get clear eyes or don’t open your eyes.
風船 is one of my leeches for the exact same reason…
… and English!
Although in English it also includes the ones with very pointy teeth for making perforations in paper, it’s mostly used to refer to cogs.
昔話 - Just sounds funny
お袋 - Sounds mean in English
海王星 just sounds kinda cool. 
言葉 was always a fun one to me. Nice to say, and word leaf is such a fun combination
Last week I learned 孫の手 which means backscratcher.
But I originally read it literally as “grandchild’s hand”
I only learned that it meant backscratcher because I looked it up after being a bit confused by the sentence that I read it in, which I had understood as “I use my grandchild’s hand to scratch my back” , which felt a bit weird to me 
My favorites were always the ones that seemed like someone forgot the word and just improvised. He broke his, what-do-you-call-it… hand… neck.
My new favorite also has to do with the hands - 手袋 (hand-bag). Dang, it’s cold outside, I need to put on my hand… uh, bags. (I actually say that in English now)
I’ve always liked 手首 and 足首
first time I saw them I was like “oh yeah leg neck = ankle, sure I buy that”
金玉 Is my favorite cuz I find it waaaay to funny.
I often find words charming when I encountered them in a charming context. I love the word 説得 because it appeared in a manga where a boy wants to marry a girl, and announces this to her father before letting her know he’s interested. Since she’s sitting right there, pandemonium ensues. It ends with the boy saying 大丈夫、これから時間をかけて、説得します。
So. funny.
A lot of words related to weather are quite fun as well, just this morning during my lesson with my tutor I learnt 雷 （かみなり）which feels like “God is making noise”, for Lightning/Thunder.
As well as 嵐 （あらし）because it is made up of 山 and 風 “a mountain wind” or “wind from the mountain”, for Storm.
Second vote for mukashibanashi
Recently, I’ve found 冗談 (joke) to be quite fitting. Literally ‘superfluous discussion’.
手首 (again) reminds me of German — Handgelenk, lit. “hand link” lol
A lot of very literal compounds like that are fun (and easy to remember!)
I love 醜, as in 醜い. It means ugly.
The left half is 酉、wine.
The right is 鬼、 ogre.
Booze + Ogre = UGLY.
It is also pronounced ‘みにくい’ which to me sounds very cute. And that makes me happy.
I agree, and みにくい sounds like “hard to look at”, and if something’s ugly, it’s hard to look at.
(I just found that there’s also 見にくい, but it means “hard to read / spot / perceive by eye”)
I like 虫歯. When a tooth is itchy, there’s an insect in there trying to get out.
And 焼き餅, which means “roasted rice cake”, but also a “jealous person”. 焼き餅を焼く means “to roast a rice cake” and “to be jealous”.
That’s exactly what it is, actually 
醜い and 見にくい/見難い are different ways of writing the same word essentially, similar to 早くand 速く - the different spellings tend to convey different meanings (見難い commonly being the “hard to distinguish” meaning and 醜い commonly being the “ugly” meaning - though both forms can mean both those things)
出鱈目 - hogwash, often also spelled in katakana as デタラメ
Also チンピラ (hooligan, deliquent)