I have no graphic skills at all, but I found this pushpin SVG with a quasi-public-domain Creative Commons CC0 license, and just resized it to 11x11 (the current vertical pushpin icon is 8x11).
Here is the original hollow version and a filled-in version.
What do you think? They seem sort of OK to me. Anyways it was minimal effort on my part, so I don’t mind if it’s rejected. The source code (modified from the original) is below:
The hollow version:
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- Adapted from https://www.svgrepo.com/svg/4879/push-pin License: CC0 -->
<svg fill="#a0a0a0" height="11px" width="11px" version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
viewBox="0 0 490.125 490.125" xml:space="preserve">
<path d="M300.625,5.025c-6.7-6.7-17.6-6.7-24.3,0l-72.6,72.6c-6.7,6.7-6.7,17.6,0,24.3l16.3,16.3l-40.3,40.3l-63.5-7
c-3-0.3-6-0.5-8.9-0.5c-21.7,0-42.2,8.5-57.5,23.8l-20.8,20.8c-6.7,6.7-6.7,17.6,0,24.3l108.5,108.5l-132.4,132.4
c-6.7,6.7-6.7,17.6,0,24.3c3.3,3.3,7.7,5,12.1,5s8.8-1.7,12.1-5l132.5-132.5l108.5,108.5c3.3,3.3,7.7,5,12.1,5s8.8-1.7,12.1-5
l20.8-20.8c17.6-17.6,26.1-41.8,23.3-66.4l-7-63.5l40.3-40.3l16.2,16.2c6.7,6.7,17.6,6.7,24.3,0l72.6-72.6c3.2-3.2,5-7.6,5-12.1
s-1.8-8.9-5-12.1L300.625,5.025z M400.425,250.025l-16.2-16.3c-6.4-6.4-17.8-6.4-24.3,0l-58.2,58.3c-3.7,3.7-5.5,8.8-4.9,14
l7.9,71.6c1.6,14.3-3.3,28.3-13.5,38.4l-8.7,8.7l-217.1-217.1l8.7-8.6c10.1-10.1,24.2-15,38.4-13.5l71.7,7.9
c5.2,0.6,10.3-1.2,14-4.9l58.2-58.2c6.7-6.7,6.7-17.6,0-24.3l-16.3-16.3l48.3-48.3l160.3,160.3L400.425,250.025z"/>
</svg>
And the solid version:
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- Adapted from https://www.svgrepo.com/svg/4879/push-pin License: CC0 -->
<svg fill="#000000" height="11px" width="11px" version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
viewBox="0 0 490.125 490.125" xml:space="preserve">
<path d="M300.625,5.025c-6.7-6.7-17.6-6.7-24.3,0l-72.6,72.6c-6.7,6.7-6.7,17.6,0,24.3l16.3,16.3l-40.3,40.3l-63.5-7
c-3-0.3-6-0.5-8.9-0.5c-21.7,0-42.2,8.5-57.5,23.8l-20.8,20.8c-6.7,6.7-6.7,17.6,0,24.3l108.5,108.5l-132.4,132.4
c-6.7,6.7-6.7,17.6,0,24.3c3.3,3.3,7.7,5,12.1,5s8.8-1.7,12.1-5l132.5-132.5l108.5,108.5c3.3,3.3,7.7,5,12.1,5s8.8-1.7,12.1-5
l20.8-20.8c17.6-17.6,26.1-41.8,23.3-66.4l-7-63.5l40.3-40.3l16.2,16.2c6.7,6.7,17.6,6.7,24.3,0l72.6-72.6c3.2-3.2,5-7.6,5-12.1
s-1.8-8.9-5-12.1L300.625,5.025z"/>
</svg>