Hello @felixwinkler !
Hope you are doing well.
Yes, I know the app in that you can achieve that. The app name is iCart Cart Drawer Cart Upsell. You can create the custom product with a custom name in the app, check this screenshot for more detail: https://prnt.sc/HNHxMYrWTQ1Y , https://prnt.sc/VTVSUlbfnUrb
Hope this will help you out with your requirement.