You can use a few of my pet projects here. They are all available on my GitHub
My Pet Projects
There are a few different 6502-related projects on my GitHub; one being a RESTful API to access information about the 6502 (instructions, facts, etc.), the other being an assembler and emulator. Both were done for projects in college classes.
Spread across 3 repositories, the SIN Language project is my attempt at writing a compiler for a custom, procedural programming language. The project consists of the lexer, parser and code generator; the runtime library; and the standard library. Links to the repositories are given below.