i second temp agencies!
i'm sorry your situation hasn't improved
i always follow your posts because i feel like we're in the same boat! my boyfriend STILL has no job either. it's so stressful and i really feel for you.
i wouldn't look into those under the table jobs, as you say they're not the best, not always 100% legal and you don't want to put your safety at risk.
it sounds like your husband is a little bit depressed (not in the clinical depression sense, hopefully). when people are depressed, they don't want to do things. it might be worth just talking to him about how he is feeling, aside from any mention of jobs.
has your husband also thought about doing some volunteer work while he is unemployed? if he does some part time it won't be enough to take up his job searching time and it will get him out of the house a bit, plus give him experience in something new. i don't know what its like in canada but over here you can just volunteer in a charity shop and that's basically free retail experience, and a reference.
what you can do now to get yourself through this is just keep repeating to yourself that this won't be forever, sooner or later something will change. what's important is that you find an outlet for your boredom- instead of shopping why not take up a new hobby. i find knitting very rewarding because the end product, you can actually wear! or you could try cross stitch or other things. make the things that you would want to shop for, and try to fill that hole.
and feel free to keep venting about this on here, it's good to talk.