To Make these DIY Optical Illusion Wooden Gems, you only need three colors of paint for each color of gem - white and black being two of them. Really good tutorial for mixing your shades of paint plus these wood rectangles are so cheap at at any craft store.
I post Perler Beads DIYs a lot because they are fun to use for both kids and adults and they are so cheap - a huge jar of 22,000 beads runs about $15 or you can get a bucket of 6,000 beads plus various pegboards for $12. For more unique and fun Perler Beads DIYs go here.
Thank You for taking the time to visit my blog! Find doable DIY holiday and every day gifts that people of all ages will love to receive. If you own an image and want it removed, please contact me at truebluemeandyou [at] gmail [dot] com