I use a lot of # and // to precede my abbreviations.
I also try to select the first/significant letters of the action I’m making a snippet for to help me remember. In my Favorite Things post here about using TextExpander to make custom search engines I created an example showing a snippet for a HubSpot search.
Taking letters there that will jog my memory, I make the abbrevation #hbs
For Google Drive search, #gds