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I think a lot of what you're calling "disposable" isn't one-use "disposable". I've been using something similar to these. $7 for 9 containers. I've washed and reused the same 9 containers for months now. They don't break, they freeze, they microwave, they're lightweight, they stack neatly, they're easy to carry. AND if they get lost or broken, they're not expensive to replace.

I have actually been investigating the same thing. :) It appears that these would be your best bet (just ordered some!):

Divided:

http://www.amazon.com/Meal-Prep-Containers-Set-Restaurant/dp/B00TXUXZ5U/ref=sr_1_9?ie=UTF8&qid=1449420201&sr=8-9&keywords=meal+prep+containers

Normal:

http://www.amazon.com/Bento-Lunch-Box-Set-Restaurant/dp/B00TZ8YX92/ref=pd_sim_79_2?ie=UTF8&dpID=51oB8mrCTzL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1QZMN80ME5YBB4JMN4RG

Bowl:

http://www.amazon.com/Round-Meal-Prep-Containers-Set/dp/B013WBBJF8/ref=pd_sim_79_3?ie=UTF8&dpID=51SGjr5hwHL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1QZMN80ME5YBB4JMN4RG

Not OP, but I have similar ones from Amazon:

https://www.amazon.com/gp/product/B00TZ8YX92/

I have these.

Just do a search for food prep containers on amazon. most containers are <$1!

Wish I got those to begin with. Bought these and half were unusable/smashed up https://www.amazon.com/gp/product/B00TZ8YX92/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1