Here's a really easy hack so that you can wear your Remembrance Day Poppy without one of those pesky pins.
Pull off and discard the green stalk.
Use epoxy to glue together the black centre, the red poppy and the green leaf.
Finish off the poppy by gluing a thin, suitably size neodymium magnet to the back of the poppy. A 10mm circle would be perfect but the two 5mm x 10mm magnet that I used worked well.
Set the poppy aside to let the glue cure completely
To securely fix the poppy to your clothing use one of these super patriotic metal disks :-) There are two types of penny in the UK, make sure you choose the one that is attracted to magnets.