I saw a makeshift steamer in a wok on TV. I've tried it at home once when I wanted to steam more food faster and this gave me a second steamer.
Put a wok on the burner with some water, just enough to generate steam. Place two chopsticks parallel into the wok. They will span the water and create a platform. Place a plate with the food on the chopsticks, cover and steam. Not a great long term solution but simple, easy and cheap.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan