Pre-Workout Meal (while at work)

[homerj742]

I used to go to the gym in the morning. My preworkout meal/breakfast was oatmeal,pb,whey,and honey. and a whey+milk shake for post workout.

Now, my wife wants to go to the gym, but she can only go in the afternoon, and she wants us to go together. Sooooo, I go after work now, and I was hoping for some economically sound pre-workout meals I could have while at work.

Would a weight gainer shake be good for a prework out? (like 500 calories, 40grams carbs, 30 grams protein)

Any help or other suggests would be greatly appreciated!

Thank you!