Common cooking weights for baking

Some weight estimates for future baking...

(another nice chart, too bad it's in ounces!
http://www.kingarthurflour.com/recipe/master-weight-chart.html) 

Water: 1 cup = 236g

White flour: 1 cup = typical 125g, but can range from 120g and 140g, depending on flour scooping/sifting method and humidity.

Yeast: approx 2.25tsp = 7.1g, so 1 tsp = approx 3.156g

Salt: this runs the gamut, depending on salt type.

Table Salt: 1 tsp of Morton's Iodized Table Salt = 6.86g average
Lowest: 6.1g
Highest: 8.1g

Kosher Salt: 1 tsp of Morton's Coarse Kosher Salt = 4.766g average
Lowest: 4.2g
Highest: 5.2g

Baking Powder: 1 tsp of Clabber Girl baking powder = 4.167g
(rule of thumb: 1 tsp per 1 cup of flour)

White Sugar: 1 cup = 200.14g, 1 tbsp = 12.5g

Brown Sugar: 1 cup = 195g, 1 tbsp = 12.2g

Shortening: 1 cup = 205.5g

Butter: 1 tbsp = 14g, 1 stick = 1/4 lb (113g)