About your emergency car kit:

A tire inflator (small air compressor) is a great addition. Saves money by not driving to a station and paying to fill the tires. Also, most people don’t pull the spare out from under the trunk floor to check it’s pressure (I’d have to empty the trunk to do so). If I have to use the spare, it’s only a few minutes to fill it up.

https://www.canadiantire.ca/en/search-results.html?q=tire+inflator+portable+air+compressor

Edit: a longer lugnut wrench wouldn’t hurt either. Garages always put the nuts on too tight and the extra leverage could be necessary to change the wheel.