1/2 cup water
1/2 teaspoon active yeast
1/2 teaspoon salt
1 tablespoon honey
1 tablespoon olive oil
1 1/2 cups flour (or more, as needed)
toppings: coarse salt, whole seeds
Place the water in the bowl of a stand mixer (or just a large bowl, if you prefer to knead by hand), sprinkle in the yeast, and let soften a few minutes. Add the salt, honey, and olive oil, then knead in the flour (with a dough hook or your hands), until you have a firm dough, somewhat on the dry side (not quite as stiff as pasta dough, but fairly stiff — if the dough is too loose, it'll be hard to roll out later). Add more flour as needed to form a firm dough. Continue kneading for several minutes, until the gluten is well developed and the dough is smooth and supple. Place in an oiled bowl, swish around and flip over so that the now-oiled bottom is on top, and cover and set aside to rise until doubled (~90 minutes, though you can also do this in the refrigerator the night before).
When the dough is risen you're ready to make the crackers, line a few baking sheets with parchment or grease them very well (I haven't tried the latter, so it's possible there may be some sticking). Gather some toppings, and a spray bottle of water (or a dish of water with a pastry brush), and preheat your oven to 350° Fahrenheit.
You can roll these out as thin as you can with a rolling pin, but for best results, use a pasta machine. Take walnut-sized lumps of dough, and flatten with your hands until they can go through the machine at the widest setting. Run it through on thinner levels (because it's softer than pasta dough, you can likely skip levels), ultimately cranking it through level 5. Gently place the thin rolled-out lavash on your prepared cookie sheets. Spritz or brush gently with water, then sprinkle with desired toppings.
Let the prepared lavash rise for 5 minutes on the sheets, then transfer to the oven, and bake until mostly golden, ~15 minutes. Remove, let cool for a moment on the racks, and then transfer to a rack to finish cooling. Repeat with remaining dough.
Serve lavash whole for dramatic effect, or break into shards.