I am willing to sponsor towards more stickers if you plan to do more.
That would be great, however, there are currently two people driving this independently.
The first person is "Cookie". He is doing this through a donation-funded approach (no free stickers, but cheaper), but ran into issues ordering the stickers. These stickers are relative cheap, but made of paper.
The second person is me. I was tired with the delay in ordering of the stickers by "Cookie", so I ordered a bit more expensive (plastic) stickers. These are the ones that are shown above. I paid them myself in advance and offer them for 300 NLG per sticker, but I ordered a smaller amount (which causes also a higher price).
So, if you want to donate now I suggest to contact "Cookie" for the address, else maybe wait for the next round to see which stickers are better and will be ordered next, and by who (I would like to see one person dealing with this instead of two).