Outline vinyl stickers like the ones I used today are produced by lots of companies. Since the first I ever used were called PeelOffs I tend to use that term generically regardless of the manufacturer. Most often I have cut the package apart and sorted parts of the sheet into category files for use. Sometimes the sheets were given to me in a swap and I don't know who made them. My appologies to all those who make the stickers I use and blythely call by the name of a competitor's brand.
That aside, I had a half sheet of some gold outline bears playing instruments and wearing party hats. I cut a scalloped circle for each of them. To keep up the party atmosphere I pulled out some brightly striped cardstock and added a bright folded card base and feature strip with colors from that striped paper.
A cardstock flag was stamped with text before mounting and each of the bears got a foam tape to pop them up from the background.