I do as others have mentioned and use up bobbins with small amounts on them for piecing.
As for the Bobbinator I saw one when at a retreat. I couldn’t see the point as I just put the bobbin where the spool would go when I want to use up thread from a bobbin in the needle. The Bobbinator owner was thrilled with it, tho so I didn’t say anything.
chacon à son goût