>Do woks even come with lids, not to mention glass ones?

Generally, I find the lids sold separately. I have 3 woks and 2 lids.
Some "modern" woks come with glass lids, e.g. like the ones from
LeCreuset. The "modern" woks are flat-bottomed and work on most stoves
without a wok ring. Does that help?

Oh, one of my woks is dedicated to smoking food in the kitchen. Wood
chips in the bottom, a round pie cooking rack to hold the food,
covered with a lid. Smoke for 20 minutes on low heat and bingo, smoked
salmon steak, or what have you. Don't wash the lid... it has all that
neat BBQ smell about it.

As for keeping things from sticking in a bamboo steamer, you can cut
some parchment paper and use it as a liner, after poking a bunch of
holes in the paper. Also, chard leaves placed in the bottoms of the
steamer trays prevent sticking quite nicely. I think cabbage leaves
would work also, but I've not tried that.