Hi
there is this greatest (in terms of media coverage, fund raising capability, and recognition, and also in terms of the good they do) charity in Poland which is called Wielka Orkiestra Świątecznej Pomocy (Great Orchestry of Christmas Charity). It seems that the event for last year is already over, but they accept bitcoin and I have learnt about it only now.
I highly recommend it for your consideration next year. OR, you might want to contact Jerzy Owsiak, he is a very recognized person in Poland, and support his fundation mid-year.
They do a lot of good stuff for sick kids in Poland, providing public hospitals with very expensive equipment for newborns and supporting health-care and life support for the newborns with their funds.
https://bitbay.net/en/crowdfunding/great-orchestra-of-christmas-charity-2018Thanks!