Hi Oliver,
Thanks for the kind words. I appreciate that you are keen to make a donation. It would actually be the first time anyone donates money to the project!
I'd be happy to set up a
http://flattr.com/ or
https://www.gittip.com/ account for receiving donations to further fund the project. Depending on the size of your wished donation that may, or may not be suitable.
If you had a larger (sponsorship) type donation in mind, you could contact me off-list to discuss sponsoring
http://harrow.io/ which is launching soon to provide paid, hosted (and local) deployment as a service soon.
Thoughts welcome, of course an easier way is for us just to set up a public BitCoin donation address, if you are into that scene.
Thanks, Lee