I went full-on geometric DIY for Kellyn’s birthday and wanted to share my favorite projects so you can recreate them. Geometric mini piñatas, paper-fold party hats, and a simple jewelry station make a cohesive, colorful theme that’s easy to put together. These are condensed tutorials—ask in the comments if you want more detail.
DIY Geometric Piñatas
I made individual mini piñatas as favors for each child. Each was a different geometric shape, filled with small treats and a ring pop for extra fun. I added a touch of gold mylar on a few because it gives a nice pop.
Scrap paper for templates
Cardboard
Crepe paper (or mylar)
Gold mylar (optional)
Scissors
Masking or kraft tape
White craft glue
Twine for hanging
Goodies for filling
Start by sketching geometric shapes on scrap paper until you find ones you like. Redraw your chosen shapes at the size you want on cardstock or paper, cut them out, and use them as templates to trace two identical shapes onto cardboard. Cut out both pieces.
Cut a long strip of cardboard a few inches wide—long enough to wrap around the perimeter of your shape. Tape one end of the strip to the edge of one cardboard shape and bend and tape the strip along the edges, following the angles until you return to the starting point. Leave a small gap as a flap to fill the piñata later, or close it now and create a filling opening elsewhere.
If you want to hang the piñata, push a hole near the top, thread a loop of twine through, tie a knot on the inside, then finish taping the cardboard strip to the second cardboard face to form the full shape.
Prepare fringe by cutting long strips of crepe paper or mylar about 1″–1.5″ wide. Fold the strips and cut fringe along one edge. Glue the fringe starting at the bottom of the piñata and work upward in layers, overlapping slightly so the base layers are hidden. Do the front and back first, then cover the sides—start at the bottom of one side and work to the top, then move to the opposite side and return to the bottom before finishing at the top.
Once fully covered, fill the piñata through the flap, tuck or tape the flap closed, and add any final decorative touches like gold mylar accents. Repeat for as many favors as you need.
Finished: a set of colorful geometric piñata favors ready to hand out.
DIY Geometric Jewelry Station
I set up a simple jewelry station with wooden geometric beads that I spray-painted to match the party palette. Kids loved stringing beads on twine and taking home custom necklaces.
Wood geometric beads
Spray paint in desired colors
Clear spray sealer
Bamboo skewers and foam core for drying (optional)
Twine, ribbon, or string
You can spray paint beads laid out on paper—flip and paint the other side after they dry—or mount each bead on a bamboo skewer stuck into foam core and spray all sides. Once dry, apply a clear sealer to protect the finish.
Lay out twine and beads at the station so kids can string and knot their pieces. This is an easy, low-mess activity that complements the geometric theme perfectly.
DIY Geometric Party Hats
I added geometric paper-fold hats at the last minute using a simple geometric template. Mini water-cone cups or snow-cone paper work well for smaller hats; larger hats can be made from printed templates on cardstock.
Water cone cups or snow-cone papers (for mini hats) or printed template on cardstock for regular size
Geometric paper-fold template printed on colored paper
Glue stick
Hot glue
Scissors
Elastic
Awl or hole punch
Cut the paper templates along solid lines and fold along dotted lines. Use a glue stick to secure flaps and form the geometric shapes, then hot-glue assembled shapes to your cone base as desired. Poke holes on each side with an awl and thread elastic through, knotting on the inside to secure.
These hats are quick to assemble and look great with the rest of the geometric decor.
Party time!
All photos by Studio DIY
If you try any of these ideas for your own geometric party, I’d love to see photos. This theme is colorful, flexible, and fun for all ages—perfect for a DIY celebration.