After learning about being polite by using 用一下, 用一用, and 用用 (etc.) instead of just 用 (see my previous question), I'm a bit more careful when asking for things.
The other day I was at the cafeteria and I wanted to 打包 (dǎbāo) = take away, so I said:
Wǒ xiǎng dǎbāo
But it doesn't following one of the polite forms above, so I'm worried it was a bit blunt. Nevertheless, 打包一打包 and 打打包包 seem overly long (and I'm not sure they're correct) and 打包一下 seems strange to me since I will be permanently taking away the food.
Question: What is a polite way to ask to take away my meal?