I think over the course of the night we had 1 nat 20 (not counting the one that was rolled just as an "evens or odds" roll) and about 8-9 nat 1s. I rolled 6 consecutive single digits at one point. Fortunately the only 20 saved my character from being possessed so that was nice.
One of the dice packs on foundry is a "DM dice" that displays multiple 20's, "TPK", "DIE", that kinda stuff, but outputs as normal to the chat. I like using it for bosses to scare the players.