I search a Addon or any other possibility to Upcount Time "since"...
Example: A Counter on my muse-page with "Free of Accidents since: Years : Month : Days : Hours : Seconds" wich just counts up second for second...
This is EZ-PZ with jQuery and 3 lines of HTML code. No widgets required.
the counter part is easy and some people like widgets so https://musewidgets.com/search?q=timer
now if you want the numbers to actually mean anything then they have to have a database to keep track of how long it has in fact been since anyone feel down... Muse can do that as well with a cms (Publiz is what i use) however Muse is eol and you prob are better looking for another web design software if the cms option is needed now