Tuki Tiki: a very minimalist Toki Pona derivate. With just 39 words, it lets you describe some ideas somewhat comprehensibly if you try hard enough.

Framish: A visual language that I've recently picked up again. Inspired by pixel art, BreadQuest, and grammar diagrams from Langacker among others.

Tbyata: haven't put it on here yet, it was inspired by 'Ulambula and Toki Pona among others.

Salamanglish: haven't put it on here yet, inspired by Karel Čapek's novel "War with the Newts".