I have 9 bags/doses of the Pully grinder cleaning crystals and a Lelit 35L water softener filter that goes in the water tank (both found in an overdue cupboard clearance and will hopefully go to someone who will actually use them) - just arrange postage and they are yours for free (or pop-in and pick them up if you are around Cambridge).
If you just want the Pully and don’t care about the box - a large letter should be enough. The Lelit filter is more than 2.5cm thick so will need to go in a small parcel.
I don’t have a stealth email address, but if you want the items and will reply to this message with yours then I will send you my address and we can take it from there.