Sorry it took me a while, I'm italian and I tried to look for the same items in Amazon.com instead of Amazon.it. Here's the complete list (from left to right, and from top to bottom):

• Speedball 2-Ounce India Ink, Super Black (https://www.amazon.com/Speedball-2-Ounce-India-Super-Black/dp/B0007ZJ8TM/ref=sr_1_3?ie=UTF8&qid=1535785514&sr=8-3&keywords=india+ink+black)
  
• Nikko G nibs
  
• Leuchttrum1917 Hardcover Medium Dotted Journal (https://www.amazon.com/Leuchtturm1917-Medium-Size-Hardcover-Notebook/dp/B00FWRVVFE/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1535786131&sr=1-1-catcorr&keywords=leuchtturm1917%2Ba5%2Bdotted&th=1)
  
• Tombow 62038 Fudenosuke Brush Pen, 2-Pack. Soft and Hard tIp Fudenosuke Brush Pens for Calligraphy and Art Drawings (https://www.amazon.com/Tombow-62038-Fudenosuke-Calligraphy-Drawings/dp/B01M71S9DU/ref=sr_1_4?s=arts-crafts&ie=UTF8&qid=1535785738&sr=1-4&keywords=tombow+brush+black)
  
• Rhodia A4 dotPad
  
• Tachikawa Comic Pen Nib Holder, Model 40 (T-40) (https://www.amazon.com/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774/ref=sr_1_1?s=office-products&ie=UTF8&qid=1535786248&sr=1-1&keywords=nib+holder+tachikawa)
  
• Nib + Ink: A Modern Calligraphy Sketchbook (https://www.amazon.com/Nib-Ink-Modern-Calligraphy-Sketchbook/dp/1419724347/ref=sr_1_1?s=books&ie=UTF8&qid=1535786354&sr=1-1&keywords=nib+and+ink)
  
  
  
  

  
  

  
  
  
  

  
  

  
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It looks like he’s using this pen nib holder: https://www.amazon.com.au/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774 , but I’m not sure about the nib, possibly a Maru (Mapping) one. But, again, I’m not entirely sure

This. Just getting new supplies is often just as motivating as a tablet I think. A nice new pad of paper, a few nice new pens, maybe even a brush or g-pen and ink if you're feeling adventurous (definitely exciting, but possibly messy).

The Copic marker pad is some nice paper. Paper's a lot about personal preference though, whatever you get go to your local art store the next time and have her help choose one with you https://www.amazon.com/Copic-Markers-Alcohol-Marker-Sheets/dp/B000Q7G7S6/ref=sr_1_1?ie=UTF8&qid=1481785351&sr=8-1&keywords=copic+marker+sketch+book

For a brush, I'd recommend one of these for sure: https://www.amazon.com/Winsor-Newton-Kolinsky-Sable-Watercolor/dp/B000YQG9ZK

For ink, this one is great but messy container: https://www.amazon.com/Speedball-2-Ounce-India-Super-Black/dp/B0007ZJ8TM/ref=pd_sim_201_5?_encoding=UTF8&psc=1&refRID=DQKJEH36V4PAJVXBXQAC

A G-nib: https://www.amazon.com/Zebra-Comic-Model-Chrome-PG-6B-C-K/dp/B006CQW428/ref=pd_sim_201_5?_encoding=UTF8&psc=1&refRID=MKPZYS4GTKG4MPMV5BKF
plus nib holder: https://www.amazon.com/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774/ref=pd_sim_229_1?_encoding=UTF8&psc=1&refRID=JQ1R1E1GERQQ20KEYEVF is more traditional japanese style than a brush but I personally don't like it as much

And a few Copic markers would also be awesome, they're expensive but refillable and the best on the market IMO. A Skin tone set: https://www.amazon.com/Copic-Markers-6-Piece-Sketch-Tones/dp/B004XR92EG/ref=sr_1_2?ie=UTF8&qid=1481785568&sr=8-2&keywords=copic+markers

Plus maybe a floral set: https://www.amazon.com/Copic-Marker-Sketch-Floral-Favorites/dp/B005NB4IZ4/ref=pd_sim_201_5?_encoding=UTF8&psc=1&refRID=JG9YQ4AVBM15NPXW4XRW would provide a very good base as far as markers go

I'm not a robot..

https://www.amazon.com/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774/ref=gbps_tit_m-5_b061_795c3b32?smid=ATVPDKIKX0DER&pf_rd_p=d570f235-a833-442f-91c1-bc2096fcb061&pf_rd_s=merchandised-search-5&pf_rd_t=101&pf_rd_i=5550342011&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=RNXCYRRRF9GTH9R0R78V

This is a very good nib holder for calligraphy. I am wanting to get back into it and do it as a hobby.

Of course. Just like in anything, for example, sports, having the best equipment won't improve your skills.

If you wouldn't mind, can you explain to me the different characteristics of a dip pen vs. a... "non-dip" pen, like the Pilot Parallel?

Also, for a straight pen holder, is one like this like the one you're talking about?

https://www.amazon.com/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774/ref=sr_1_4?ie=UTF8&qid=1474410881&sr=8-4&keywords=straight+pen+holder

That's a dip pen. He's inking it.

specifically this handle:
https://www.amazon.com/Tachikawa-Comic-Holder-Model-T-40/dp/B000UF2774

as for the nib, I'd have better luck guessing at random, but I know it's one designed for dotting comics.

Also taking a wild guess, it's Sumi ink. Thats a v popular kind lately.
https://www.amazon.com/Yasutomo-KY6-Sumi-Ink-Black/dp/B0026I4UK0

I have the link that u/muellerson_ gave me. Let me find it:

https://www.amazon.de/Tachikawa-Stifthalter-Federhalter-Modell-T-40/dp/B000UF2774/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=tachikawa&qid=1559507383&s=gateway&sr=8-1

you should get some maru nibs too, the pen doesn't come with any

I use a Tachikawa nib holder with a Maru nib. I was under the impression that the two are similar when it comes to use. I guess if that's not the case, I'm in the wrong sub lol