This website has a TON of cheap decorations, wedding stuff, crafts, etc. Catering you dessert section in all blue sweets is a great way to include your wedding theme colour of blue into your food choices!
Hostess with the Mostess® - Inspiration for Life's Celebrations - Inspire
Shower decor easy and inexpensive filler arrangements.make something like this with blue instead of pink and a cute monogram sticking out the top. Or put it in some galvanized small buckets I have & put the monogram straight on the bucket