What do you find both challenging and rewarding?

I travel quite a bit. Traveling is rewarding and enriching, but it is also tiring and time consuming. At times I find it a challenge to maintain a daily creative practice while away from my studio. I have recently started to collage while traveling. I now pack scissors, paint, glue, and plenty of paper. Collaging instantly draws me into an art making zone. It demands focus, but is fun and spontaneous. The reward is an assemblage of color and shape that express time and place.