FragileWarrior expounded:

It's the wrong time of year now but as winter rolls around, check out the
snowball makers at Walmart and similar stores. They make them up to 10"
or 12" size. PERFECT for orbs. The guy who is teaching our class uses
them.

Have you got a picture of this orb? Of the orb, not the teacher! ;-
--
Ann, gardening in Zone 6a
South of Boston, Massachusetts
e-mail address is not checked
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