Shipping a unicycle overseas

What are the best practices to ship a unicycle overseas? I want to ship my unicycle from the USA to Budapest, Hungary to take part in an event near there (Ultrabalaton 220km) and then ship it back home. Why? Because I’m trying to travel with carry-on luggage only not only to Hungary but to other destinations after the event and don’t want to lug around my unicycle.

What courier would you recommend?
Any tips from other folks who’ve done this in the past?

Thank you in advance!