I make many scratch folders and often hit this:
$ cd ~
$ ~ mkdir tmp
mkdir: tmp: File exists
$ ~ mkdir tmp2
mkdir: tmp2: File exists
$ ~ mkdir tmp22
mkdir: tmp22: File exists
Now I just type sf
$ sf
$ 2024-10-19 pwd
/Users/breck/sf/2024-10-19
The line I added to ~/.zprofile:
alias sf='date_dir=$(date +%Y-%m-%d) && mkdir -p ~/sf/$date_dir && cd ~/sf/$date_dir'