Well, everybody has 1777 as /tmp (with the sticky bit).

  $ ll -d /tmp
  drwxrwxrwt. 20 root root 4096 Mar  3 12:19 /tmp
  $ mkdir mytmp
  $ chmod 1777 mytmp
  $ ll -d mytmp
  drwxrwxrwt. 1 luser lgroup 0 Mar  3 12:19 mytmp

Well, maybe not everybody

  $ ls -ld /tmp
  drwxrwx--x. 2 shell shell 40 Jan 15  2022 /tmp