Chilli plant seeds: they have very high efficiency i would say 99 percent.
Generous amounts of: New Mix Twilight Black Pearl Two of unknown variety with big and fleshy fruits - the mild ones and the moderately spicy ones
Small amount of Cayenne pepper seeds
(for the rest of the list - Lots of Sunflowers high and small, Marigold (Tagetes) Calendula officinalis, Centaurea, Poppy and seeds of shrubs suitable for mixed hedges: Crataegus, Blackthorn, Rosa Rugosa, Ligustrum Vulgare, Ilex aquifolia, Syringa Vulgaris (Lilac), Amur Maple, Alnus, Viburnum opulus)
I wish I could swap them for some Lilium and Ledum Palustre seeds or anything from Gentiana family or Vaccinium Myrtillus/Uliginosa/Vitis-idaea/Oxycoccus, or Heather.
Also if you have any used one off plastic food containers i.e. cream containers, humous, coleslaw, chinese take away (with lids if possible) I would be happy if you gave me them to reuse as pots - my way of recycling.