German phrase
Wer möchte bei ~ mitmachen?
Meaning
Who would like to take part in ___?
When to use it
A friendly call for helpers. It suits group activities and light volunteer requests.
Example dialogue
Wir organisieren morgen einen Kuchenverkauf.
We are organizing a cake sale tomorrow.
Wer möchte bei dem Kuchenverkauf mitmachen?
Who would like to take part in the cake sale?