you DON NOT need to overwinter your hosta, hostas are hardy to zone 3.
As for cannas; cut, clean and dry the tubers - put them in a paper bag then place it under your sofa or your bed.

Yes, Hosta are very hardy; they have no problems survive a zone 5 winter.

As long as you store them dry and they are in a dark place, you should be fine. I store mine in boxes in a closet that stays the same temp as the rest of my house and they do fine.

Plants are smarter then you think, when the canna has had enough rest they will start to sprout in the box.

Also, be careful you don't plant them too early in the spring or you could lose them. I usually wait until June to plant them but I think I'll post the question to find out the ideal planting time.

Sorry to miss guide you on the hosta Samfawzy & slfairless but I am a hosta collector with over 100 varieties. The hosta in the pot was an example that they can be stored in pots in the garage. Only a few make their way there as all the other are in the ground. I am thankful that you responded with advise. I didn't know if they should be in a cold area or basement for winter. I guess what you are saying is it's not the cold but the darkness that is important.
So I will try your suggestions. Clean them, wrap them, keep them dry and in the dark. Thanks so much for responding.
G

I find that my canna like it dark, and also cool, but not cold. I put mine in a box in my wine cellar which is about 45 - 55 degrees F.