The fact that I keep wanting to read this as Codex UNO not withstanding :-) this is a collection of  fun items/artifacts that likely won't break the game. What's more, there's plenty of backstory to each of them. You could reasonably build a mission around retrieving them or dealing with the fallout of finding one, e.g., being hired to take the Katana MK IV off of Daiki Masuda or finding the katana and Daiki thinking you stole it.

Minor issue: Some of the images line up with their descriptions, while others roll over to pages of different items.

Lingering question: What was that nun doing wandering around a monastery in 1870 toting a revolver?

A solid collection of unique  items that avoids the common pitfall of being so powerful/important that PCs / the Plot cannot survive the failure of the PCs to get their hands on them. Neat, not world-ending stuff.

This collection of "Unsecured Dangerous Objects" can serve as excellent mission objectives. Sending the PCs off to secure, contain and protect dangerous MacGuffins is something FIST excels at. The real fun begins when they get these UDO's in their hands. Each one offers incredible power, but comes with a terrible price, like other teams coming for your new sweet gear.

They also come with a free frogurt! (Simpsons reference. Anyone?)

One note? The descriptions and illustrations are often on different pages. The author may want to reformat the PDF so that they are together.

A collection of weird and dangerous devices, with a focus on weapons- a few typos, but nothing too bad. I'd love to see this expanded on.