Sorry to hear that
My first kobo mini was stolen too (at the beach) and I bought another kobo mini (hehe I'm original)
They are so cheap these days ( I bought mine from UK, on ebay, less than 50€).
Maybe you can open a paypal-like account to receive some donations. I'll be happy if I can support you with a few €, less than 5 because I work, but I work in Spain, so not much money here