I have the yellow flower head ones on two magnetic pin holders - one at my machine, one on the cutting table. I refill/relocate the pins as needed. Also have one magnetic pin holder with the long glass head pins that I like for piecing as they don't distort the fabric so much. Wish I knew the brand of those as they are near perfect and are getting old and bend very easily. On the search for more now.
But like Onebyone, I use wonder clips 90% of the time for everything.
As a side note.....my 9 year old OCD granddaughter sat one day and arranged all the pins on the magnetic holders with the heads all going in the same direction. I didn't know she had done it until after she had gone home. I can't wait until she comes back and does it again for me. I will request it this time, and possibly pay her somehow. It was great and lasted only a short time until they were a jumbled mess again.