Cookies free of frostings and fillings work best. Some cookies have scalloped edges that look especially nice as cookie flowers. You can look in the international section at grocery stores for interesting cookies with holes in the middle. Gumdrops can be about any size or shape. You will need twice as many gumdrops as you do cookies or skewers.
Bright colors are fun.
It is also fun to plan the colors of the gumdrops around other decorations or color schemes, or holidays. It is fun to use red and green at Christmastime, orange and black at Halloween, or pastel colors at Easter. Styrofoam glued into any vase or container will hold the flowers. A glue gun works well to secure the foam to the vase or container. Florists have special foam for making arrangements and a sticky clay material to secure it to a vase or container, but it is more expensive than Styrofoam and a glue gun.