Law / Buy from allegro, ship to Indonesia [3]

Google this - Parcel Forwarding Poland or Mail Forwarding Poland

Life / Shipping from Poland post office (Lithuania is too expensive :) [6]

It is cheaper to use Poland Package Forwarding And Polish Address. They'll send you a parcel to paczkomat and pick you up.

USA, Canada / Packages sent from Poland to USA "held" in customs? [13]

The best way to avoid such unpleasant things is to use the services of companies offering an address in Poland to receive parcels and send packages abroad.

To find this type of services in Poland, Google-, Poland Package Forwarding And Polish Address, reship poland

Life / Shipping Company Pickup in Poland? [4]

For pick the package up and shipping, you can try company in Poland.
Check with Google this / Poland package forwarding and Polish address /.

Life / Letter-mail international Forwarding and redirection with Poczta Polska in Poland? [17]

You can find such services in Parcel Forwarding Poland poland-package-forwarding-and.business.site

Life / Sending small parcel from Poland to other EU country question [3]

You should go to the post office and send the parcel. After checking the weight of the parcel, a corresponding fee is set.
The service is helpful Parcel Forwarding Poland.