I always carry a piece of paper and a pen with me and I will jot it down whenever I find some useful information or even a piece of good ad on the street.

我的做法是，衣服口袋里有一张纸和一只笔，我看到有用的资料就记录下来，在街上见到好的广告词我也抄下来。

youdao

Written on pink paper, the ad sits next to large white placards where the day's articles are written in pen and hung on a wall outside the municipal theater.

NPR: Basra's 'Sidewalk' Paper a Forum for the People