How to Make a sparkler rocket
Cut cardboard into 8" l x 3" w strips. With cardboard down on a cutting board, place 1 AA battery on 1 end. Roll once so battery is covered. Hold in place. Spread a light coat of Craft Glue in thin sections on the rest of cardboard. Roll battery up. Using electrical tape, tape roll together vertically. Wrap ends in electrical tape. Set aside to dry. Cut a 1" piece of putty. Cut in 1/2 through the middle. Once tubes dry, take 1 of these pieces. Pack it in tightly at end of tube to make a seal, using bolt to really pack it in. Smooth outer side with fingers. Using a flashlight, shine through open end. Be sure end you packed is sealed well. Get your sturdy box. Cut up sparklers into tiny crushable size pieces. Use your pestle. Finely grind 10 sparklers into powder. Use a small funnel with an opening less than the size of a penny. Fill tube 1/3 of way with sparkler powder. Pack it in tightly by using a bolt and pressing and packing firmly. Continue until almost full, leaving about 5mm. Put remaining piece of Knead it in open end. Pack firmly to seal. Close tube. Smooth outer section with fingers. Holding tube vertically, drill 1.5mm hole on each side within taped area, cleaning off any putty. You have 2 sets of holes within taped area. Take full sparkler stick. Run it through 1 side and out other of holes you just drilled. Make sure it goes through smoothly. Drill 4mm hole into center on end that you just drilled side holes in. Using 2 wire ends of the sparkler sticks, cut into 2" strips. Insert in 2 holes on sides. Bend wires down. Tape tightly. Insert piece of sparkler approximately 3" long into center hole drilled in top of tube. This is the fuse. Out of doors, set up launching mechanism. Take 2 12" sticks. Cross over to make an "X". Tape together in center to keep x formation. Press firmly into ground. Place 1 end of launch device on cradle of "X" bracket with other end on ground. Place sparkler rocket into pipe with fuse section sticking outside. Light fuse!