Anyways, if you want lots of silly languages https://esolangs.org/wiki/Language_list

I'll list some languages I've implemented which aren't on this list:

https://github.com/serprex/Rue I implemented Rue based off of https://esolangs.org/wiki/Thue but with the idea to extend it with regex & modules

https://github.com/serprex/oilrs https://esolangs.org/wiki/OIL someone shared an esolang they'd been implementing in Python, I decided to implement it in Rust. Making a second implementation made for good discussion, such as "how strict is integer format?" where it was decided 007 shouldn't be accepted, that empty cell vs empty-string cell being semantically different be kept, & the stdlib was moved to its own repo

https://github.com/serprex/NULL I decided to port https://esolangs.org/wiki/NULL to Rust. If there were more programs in NULL I'd consider digging for a faster bignum implementation

Bonus: https://esolangs.org/wiki/Three_Star_Programmer is an interesting one-instruction machine. One instruction is a neat space, a somewhat different dimension of minimalism from brainfuck, see also https://esolangs.org/wiki/Jot