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EK Latin and Ek Devanagari are Open Source now and available under the name Ek Mukta on Google fonts.
The Kickstarter project Endangered Alphabets II: Saving Languages in Bangladesh might be of interest here.
In short, their aim is to record the Indic alphabets used by the indigenous languages spoken in the Chittagong Hill Tracts of Southern Bangladesh, such as Mro, Marma, Tripura, and Chakma. The project creator Tim Brookes will carve signs using these alphabets for his Endangered Alphabets exhibition, and a typographer and a calligrapher will collaborate to produce typefaces that can be used to print children's schoolbooks in these languages.
The project description page is somewhat vague about just how endangered these scripts and languages are and what the current situation is, so I've drawn up a quick background about the four languages mentioned.