I'd be interested to hear what you've found. I've bounced around to various things of varying quality. Youtube's got tons of stuff, but no coherent program. I did the Scientific 7-Minute Workout [0], which was surprisingly good for a lunch hour (when factoring in transit, cleanup and actually needing to eat, 7 minutes isn't too far off), but obviously one would hit a ceiling pretty quick. I've also found Never Gymless [1] to be good, but that was at a different time in my life (one where I was ten years younger).

[0]: http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-mi... [1]: http://rosstraining.com/blog/never-gymless/

In the past when I've traveling, didn't have access to any equipment or didn't feel like running I've used the Sworkit app. It's free and allows you to pick time, type of workout etc. I've found it's better (at least for me) than trying to come up with an on-the-fly workout of my own.

I recently picked up You Are Your Own Gym, by Mark Lauren, which seems to be good for that.

I was in the same situation and started looking for videos on youtube and then finally curated a bunch of good ones and put it up here: https://www.flexit.co/