This page has LOTS of ideas for buttons, on cards and other things! It is not in English, but you can get the idea.
Mothers Day Frame - The Supermums Craft Fair
Handmade Mother's Day Ideas 2014
Handmade Mother's Day card buttons flowers mum by SunnyBunnyCraft, £3.00
Could use this card for all sorts of occasions, not just mother's day. just another card making blog
Mother's Day Card / Vintage Inspired / Hemp by FallingCoconuts, $4.00
Free Mother's Day Printable (1 page) #printables http://anightowlblog.com/2012/05/printables-mothers-day-2.html