i'm not well-versed in the politics of unicode, but it seems like you're looking for use-specific iconography, not symbols that are part of language. there's no standard symbol for "bicycle transport available", or "wifi access available". the three curved lines radiating from a circle image adds some visual flair to your project and can be used as a shorthand if you make it clear what it means, but any symbol you could use there doesn't necessarily convey the same meaning if i use it in my project.

contrast that with the symbols in this proposal - the TEXTILE CARE SYMBOL WASHING TUB WITH SEVENTY DEGREES CELSIUS glyph means the same thing no matter where it's used.