Usage edit
Add {{User:PC-XT/KIS/sandbox}} to your user page, for easy access to your own personal sandbox in a WP:Keep It Simple label. Template:My sandbox automatically takes you to the edit page, but this label by default takes you to the read page. If you want it to link to the edit page, use |edit=yes. If you want it to go to the sandbox of the user who clicks on it, use |yours=yes.
Example edit
{{User:PC-XT/KIS/sandbox|yours=yes|edit=yes}}