The City of Chicago partnered with an Innovation company to solicit ideas for how restaurants can survive as the weather gets too cold for outdoor/patio dining. While the "winners" will be announced soon, the various ideas themselves are on this site:
https://challenges.openideo.com/challen ... ution-list
The entrees (entries) are shown in order of how many "likes" each has received from the public. Some are practical, some wild, some jokes, but there may be usable nuggets in there for finding.