Kbake,
 
Making crafts out of recyclables is an efficient, low-cost way to conserve materials.  It is great that you are conscious of the environment and green living.
 
Here is one activity that would allow you and your children the freedom to incorporate many different materials.  
 
“Build A Castle, and Explore First Grade Geometry” is an activity that allows you to use any reusable materials on hand to build a castle.  This activity also allows you and your child the creativity to build as you like.
http://www.education.com/activity/article/castle_building_geometry_first/
 
I hope that you find this activity enjoyable.  Best of luck with your craft making!
 
Best wishes,
 
Hayley

How fun! Making fun and functional objects out of recyclables is such a great way to teach kids about green living, and is a great way to spend time with kids and create shared memories. here are few more ideas for fun arts and crafts projects using recycled materials. Let us know how they turn out!
Make outdoor stepping stones using plastic and Styrofoam containers: http://www.education.com/activity/article/stepping-stones/
Turn old fridge magnets into one-of-a-kind-art! http://www.education.com/activity/article/fridge-magnets-supreme/
Practice paper making with coffee can ornaments
http://www.education.com/activity/article/coffee-paper-ornaments/
Turn an old oatmeal can into a planetarium
http://www.education.com/activity/article/bedroom_planetarium_first/

All you need is glue to creat your own thing

you can make collage work by taking a theme and finding corresponding pictures from news papers.Toilet paper roll can be used as building blocks