Using 1/8-inch drill bit, drill 120 holes in softball at 90-degree angle for inserting nails. Do a test hole first to be sure the hole is the right width to snugly fit a nail.
1 Softball
Insert metal rod (allium stem).
Insert nails into holes, fixing them firmly in place.
120 4-inch Flat-head Nails
Hold allium by rod in large cardboard box and spray paint purple.
1 Spray Paint, 1 Cardboard box
Allow to dry thoroughly. Display in garden.
Notes
If you keep your garden art alliums outdoors all year-round, the paint may need refreshing once a year.