For those with stamina, a great option is to trek 10 kilometres from Cemoro Lawang through the Tengger Caldera and up the other side where onward transport is available to Malang via Tumpang or to Ranu Pane for those wishing to climb Gunung Semeru.
From Cemoro Lawang, head down the main road that leads into the Caldera and turn left, away from the road that leads directly to the base of Gunung Bromo. The dirt road you walk along will mean that the caldera rim will be on your left and Gunung Bromo will be on your right. The road is used by some jeeps taking passengers around the back to the stunning savannah. After several kilometres, you yourself will enter the savannah which feels a bit surreal -- a cross between the plains of Africa and a scene from Jurassic Park. Follow the road until it becomes paved and commences its ascent up the caldera wall into the village of Jemplang. You'll know you've arrived in Jemplang when you see the 15-metre tall observation tower which provides visitors with impressive views of the savannah and the massive caldera.
From Jemplang it's a further six-kilometre hike or ojek ride to Ranu Pane or a 27 kilometre jeep or ojek ride to Tumpang for onward travel to Malang. Jeeps from Jemplang don't run on a schedule and only swing by when there are passengers heading in that direction, so you'll have to wait until one arrives. If one doesn't arrive, there is accommodation available down the road in Ngadas.
From Tumpang, angkots depart regularly for the Arjosari bus terminal in Malang for a fare of 5,000 rupiah.