
Plum Pudding came up with a super-creative idea for some gorgeous button and cardboard flowers.

One More Moore has a nice tutorial for making a bouquet of simple button flowers a lot like these --->
Theirs add felt leaves to fill the bouquet out a bit. I can't wait to try these first two ideas...and hopefully deplete my button collection a little bit.
Two Straight Lines has a tutorial for a very simple crepe paper flower bouquet displayed in a paper-covered can. It's very cute and the 'vase' is a great canvas to decorate for an additional gift for your favorite mother. Martha Stewart also has a pattern for some GIANT crepe paper flowers for all the paper you'll have left over! It's odd...Martha Stewart also had a big article and templates for making old-fashioned crepe paper lilies, roses, and other flowers in her weddings magazine the summer I was married (2001), but I can't find any reference to it online. Crepe is very moldable and stretchy and you (probably not small children, but you!) can create some very realistic flowers with it.
Finally, I really like Klutz's Tissue Paper Flowers book
Happy Mother's day, and happy crafting!