So yeah this is possible too. So let’s just say you want to link them to google for arguments sake. Tag them like “link–https://www.google.com”. Then in the customers/account.liquid page you can loop through them, check if the tag contains ‘link’, split the tag by the double dash, and put the last part of the tag in an anchor:
{% assign url = false %}
{% for tag in customer.tags %}
{% if tag contains 'link' %}
{% assign url = tag | split: '--' | last %}
{% endif %}
{% endfor %}
{% if url %}
Click here to go to google
{% endif %}
You may want to use a more unique character to split by in case there’s any double dashes in any of the urls you provide. Maybe like dollar signs or something.