@Zacharý There's always the other polyglot for inspiration. Last place we listed all the languages out was
answer 144. I imagine things like Gaot++, Cow, Moorhens, and Klein might work. Minimal-2D is a bf-based 2d lang that's not too painful to use. Labyrinth is always fun. Handful of non-Ascii based languages that
should be simple-ish to add: EmojiCoder, Unicat, Emoji-Gramming, Aheui