Clay Coasters

Clay is shaped into flat disks to make a simple coaster that little ones can make too.  Everyday dishes shares the details.

Good for ages 2 and up.

Get the instructions here:
http://everydaydishes.com/creative-crafts/oven-baked-clay-coasters/

Jar Lid Coasters

Lids for glass jars are lined with cork and turned into upcycled coasters with coconut head survival guide.

Good for ages 7 and up.

Get the instructions here:
http://coconutheadsurvivalguide.com/mason-jar-lid-coaster/

Paper Coasters

Scrapbooking paper is cut into circles and used to make pretty coasters with hello wonderful.

Good for ages 6 and up.

Get the instructions here:
http://www.hellowonderful.co/post/easy-diy-paper-coaster-gift

Washi Tape Coasters

Small strips of wood are cut and glued together and then decorated with washi tape to make coasters with chica circle.  For a more kid friendly version popsicle sticks would work too.

Good for ages 7 and up.

Get the instructions here:
http://club.chicacircle.com/washi-tape-mini-pallet-coasters-diy/

Heart Coasters

Hearts are cut out of card stock and felt and vinyl glued to make valentine coasters with vixen made.

Good for ages 6 and up.

Get the instructions here:
http://www.vixenmade.com/2012/01/valentine-coasters.html

Leaf Coasters

Foam sheets make the backing for these pressed leaf coasters from inner child fun.  She uses duct tape to provide the second background and contact paper to seal in the leaf.

Good for ages 4 and up.

Get the instructions here:
http://innerchildfun.com/2009/10/400th-post-fall-leaf-coasters.html

One artsy mama uses tiles and fall colored tissue paper leaves for her version. 

Get the instructions here:
http://www.oneartsymama.com/2012/10/fall-leaf-coasters.html

Felt Button Coasters

Buttons and glue turn a square piece of felt into a great and colorful coaster with buttons galore.

Good for ages 3 and up.

Get the instructions here:
http://buttonsgaloreandmore.net/felt-button-coaster-fun-aleenes-adhesives/

Curling Ribbon Coasters

Chica and jo blend multiple colors of curling ribbon to make unique and colorful coasters.  They add a glue coating to the ribbons once they're all twirled to make them stick and shine and then glue them to a cork coaster to make them more secure and stable.

Good for ages 9 and up.

Get the instructions here:
http://www.chicaandjo.com/2009/04/21/make-coasters-from-curling-ribbon/

Sharpie Designed Tile Coasters

Sharpies take plain tile coasters to the next level giving them patterns, sayings and drawings.  Find all of the details at slap dash mom.

Good for ages 2 and up.

Get the instructions here:
http://slapdashmom.com/diy-tile-coasters/

Creative in chicago draws on an intricate pattern.

Get the instructions here:
http://www.creativeinchicago.com/2014/08/how-to-make-zen-doodle-coaster.html

Ghost Drink Coasters

Transform shelf liner into a textured ghost coaster adding sticky black foam for eyes and a mouth and tracing this cute template at better homes and gardens.

Good for ages 5 and up.

Get the instructions here:
http://www.bhg.com/halloween/indoor-decorating/diy-ghost-projects/#page=16

Ink Blotted Coasters

52 week projects has a cool and simple tile coaster project using ink and a dropper.  She said it's very hard to mess up, making it a perfect project for kids.

Good for ages 3 and up.

Get the instructions here:
http://52weeksproject.com/post/29302076841/guest-post-alcohol-ink-dyed-coasters

Fabric Coasters

Muyingenioso dresses up cork based drink coasters with pretty fabrics. 

Good for ages 5 and up.

Get the instructions here:
http://www.muyingenioso.com/tablon-de-notas-con-salvamanteles-de-ikea/

Upcycled CD Coasters

Crafts by amanda re-purposes old CDs by decorating with pretty scrapbooking paper to make fun and colorful drink coasters. 

Good for ages 5 and up.

Get the instructions here:
http://craftsbyamanda.com/2012/10/recycle-craft-cd-coasters.html

Pressed Flower Coasters

Martha Stewart turns clear glass tiles into coasters by slipping in a few flattened flowers in the middle.

Good for ages 8 and up.

Get the instructions here:
http://www.marthastewart.com/271326/pressed-pansy-coasters?center=307033&gallery=275133&slide=271326

Homemade simple has a very similar tutorial.

Get the instructions here:
http://www.homemadesimple.com/en-US/Crafts/pages/pressed-flower-possibilities.aspx

Kendra has some more unique ideas for coasters making fuller flower patterns. 

Get the instructions here:
http://home.kendra.com/victorianrituals/Victor/flowercrafts.htm