Earlier quoted context omitted.
You should still be able to recount what you did , past tense. "This morning I sketched out three different possibilities for the new client check-in service. First draft of the spec is in progress, I expect to send it over to Jen and Andy tomorrow for their feedback." "I made a dozen or so mockups for the new landing page. I have a couple more ideas I want to try out tomorrow, then I'll figure out what the best four…
That sure sounds like a day of productive work or a day of doing nothing being covered over with some made up fluff. One or the other.
The first one says they're writing a spec. Well, three days later, where's that spec? Next one is producing some designs, so same. Sure someone saying "$TOOL/$NEW_FUNCTION/$REPLACE_FRAMEWORK just didn't work out", could be cover for "I was playing Pac-man all day", but if you ask for details, BS should become clear pretty quickly.
And again, that's starting from the position that you think your teammates are probably slackers who would rather lie than work. Which is not really a great position to hold, IMO.