There are pages that allow you to make pixelart if you don't want/cannot use programs

My preferred program for graphics work is GIMP - GNU Image Manipulation Program – a legaly free program (under a General Public License v3 & later)

Like most high end graphics programs, however, there is a pretty steep learning curve, so it's probably not woth the effort if your interests are limited.

Another option would be to search for nice [small] images that are either Public Domain, or issued under [i]some[/i] (NOT ALL) of the various GNU/Creative Commons licenses [q.v. [url=en.wikipedia.org/wiki/Creative_Commons_license]Creative Commons license[/url] for an overview]

Yet another option would be to ask (either here or at a dedicated graphics site) for graphics to be made for your use.

PMC doesn't offer a tool for making trophies. You have to make them in an image editing program of your choice and then upload them to PMC. :)
Personally I use Paint.net (free, but careful not to click the ads!) or Aseprite (pixel-art program) to make mine. 😊

The official ones by PMC are pixel-art of 32px then up-scaled to 64px. Hoping to write up a blog soon with more trophy and Jam making help!

Idk, I want to know too