The Obvious Solution

I used to work as a lab manager at a previous job. I think the building manager in that facility misses me.

He sent an email telling me that someone at my old lab called him in to look a clogged drain. When he got there, that person showed him a sink with several inches of murky water in it.

The building manager reached in and pulled out a drain plug.

I don't think he's very impressed with my replacement.