There is a tool I use for these cases:
You can fit it into almost any vase, even if the neck curves.
Letting the vase sit with hot soapy water in it for a while can help too.
@AnnaLear Our forecast keeps threatening freezing rain and sleet. So far it's been rain. I'd much rather just have snow. At least then you know what you're driving on.
Duct-tape
My personal favourite for a lot of 'let's fix this quick-and-dirty' situations.
No cutting involved, again available at most hardware stores.
It's quite strong and will hold a lot of wind. Applying multiple layers is usually a good idea to keep it airtight.
Can't all questions be closed as dup of a canonical duct tape one? :P
user259867
No, there should also be one about WD-40. Then close everything else.