Yeah, I always used a large screwdriver on the valve rocker post with the valve cover off to set valve lash back in the day. Reminds me I'm still waiting on the tool guy to fill my $500 snap on gift card.....from 30 years ago lol.
I have quite a bit of Snap-On but I almost never use them. I cant have them in my shop or my tards with lose them all, so they stay home, but I dont have a lift at home so I do most of my wrenching at work. One day when I retire I will move my kitchen, knock down the wall and make a 3 car garage with a lift in the middle.