I designed kinda a rough sketch of how the icons for the game currencies could look like.
The sine waves are drawn in Raylib and they are static, as well as the circle and the border.

The “R” and “i” in the reals and imaginaries’ icon are font characters. Initially I thought about drawing everything, but then I saw a video about game optimization and that it’s very inefficient for the GPU to render small triangles, which eliminated the drawing in Raylib option, and also it would have been a hassle and a half. So this left 2 choices, load the R and i as a font or an image. I chose to load them as fonts because this allows better scalability, as a font isn’t made of pixels. But I didn’t know how much time I will spend making the font implementation to work.

First I had to find the fonts that had my desired characters, which was a little tedious having to download or scroll through the list of characters for each font. For this I had to install Font Forge so I could view every character in the font. After that I had to create a new font and to replace the i and R characters of the font with my special characters and then hook it up to Raylib.
After loading up my special font I had to tell Raylib whicch characters to import, and I had to measure the characters visual height so I could align them properly in the icon.

Each icon is drawn using their specific function, but I am thinking of combining them into one function in the future.