On Mother's Day:                    

Options:

1- Make your mother a surprise offering her something. If you don´t have money you can do something yourself for example  a card

(look in the links I propose you)

http://crafts.kaboose.com/holidays/mothers-day/

http://www.enchantedlearning.com/crafts/mothersday/

http://www.zazzle.pt/mothers+day+cards+presentes

http://www.apples4theteacher.com/holidays/mothers-day/

2- Write her a small poem saying how much you love her or print one from the many these links offer you:

http://www.mothersdaycelebration.com/mothers-day-poems.html

http://www.apples4theteacher.com/holidays/mothers-day/poems-rhymes/

http://www.theholidayspot.com/mothersday/mothers_day_poems.htm

http://www.poemsforfree.com/mothersdaypoems.html

http://www.theholidayspot.com/mothersday/mothers_day_poems.htm

3- Bake her a cake. On this link you can find 

 some Mother's Day  recipes for cakes

http://www.goodtoknow.co.uk/recipes/181816/Mother-s-Day-cake-recipes

http://freebiesandstuff.freeyellow.com/mothers_day/recipes/cake-recipes.html

4- Buy her a bunch of flowers

5- All of the 4 options and she will be absolutely delighted!