I added most of the below to Serendipity Seed Swap (EU), but in case someone wants to trade with me directly for some reason, I post what I have below.
I grow in Copenhagen region of Denmark, coastal climate (Cfb) with 792 mm average annual rain fall and 1722 sun hours on average. I grow the plants at 3-4 different sites, but can tell you more about growing conditions if you want to know about specific seed.
Common
Cucurbita - pepo, maxima, moschata, taste selected by chef students
Cucumis melo
Cucumber
Aubergine
Corn - sweet mostly, some flour
Tomato - mix of many varieties divided into small (cherry) and large, grown outside
Tomatillo
Chicory - many types
Broad bean
Spinach
Runner bean
Capsicum annuum - had lots of varieties but mixed them all now
Less common
Perennial kale population (3rd generation from Chris Homanics Kaleidoscopic grex)
Artichoke with winter hardy genetics (Serridslevgaard OP)
Hablitzia tamnoides - vining perennial spinach, very long lived (30+ years)
Silene latifolia
Silene vulgaris
Claytonia perfoliata
Claytonia sibirica
Oxyria digyna
Rhubarb
Rumex scutatus
Rumex sanguineus
Rumex sp - ground-covering variant (possibly acetosella)
Rumex acetosa - Belleville type
Portulaca oleracea
Beta vulgaris subsp. maritima
Blitum bonus-henricus - long-lived spinach
Stachys byzantina
Phlomis tuberosa
Plantago coronopus
Salvia officinalis
Salvia nemorosa
Agastache foeniculum
Hyssopus officinalis
Melissa officinalis
Monarda didyma
Origanum vulgare
Pycnanthemum virginianum
Thymus vulgaris
Thymus serpyllum
Thymus praecox
Thymus pulegioides
Myrrhis odoratum - smooth-leaves variety
Levisticum
Ligusticum scoticum
Angelica archangelica
Dystaenia takesimana - long-lived lovage-sellery tasting herb green in winter
Foeniculum vulgare - leaf variety
Chamn-namul (Spuriopimpinella brachycarpa)
Godeulppaegi (Crepidiastrum sonchifolium) - dandelion relative
Cirsium oleraceum
Chicory - Catalogna types (different named varieties selected for possible hardiness and perenniality)
Campanula latifolia
Aster scaber
Ligularia fischeri
Sochan (Rudbeckia laciniata) - forager chef Alan Bergo’s favorite wild edible
Eurybia macrophyllus
Hesperis matronalis
Cochlearia glastifolia
Bunias orientalis - perennial with edible flower shoots, like spicy rapini
Diplotaxis tenuifolia
Sanguisorba minor
Sanguisorba canadensis
Sanguisorba menziesii
Lathyrus tuberosus - looking for collaborators
Alcea rosea
Malva moschata
Malva alcea var. fastigiata
Allium babingtonii - bulbil-producing perennial leek that easily survives in my humid garden with lots of competition
Allium ramosum
Allium flavum
Woody plants (extra seed I have from Sheffield in the US)
Acer macrophyllum
Acer saccharum
Aralia chinensis - looking for collaborators of anything from Araliaceae for edible shoots
Calycanthus chinensis
Calycanthus floridus
Cephalotaxus fortunei
Chaenomeles sp. for fruit - own seed
Chimonanthus praecox
Diospyros virginiana
Eleutherococcus senticosus - looking for collaborators of anything from Araliaceae for edible shoots
Fraxinus ornus
Morus alba - one of top five most nutritious plants in the world
Rhus aromatica
Rhus trilobata
Shepherdia canadensis
Tilia americana
Viburnum lentago
Xanthoceras sorbifolium
Zanthoxylum simulans
Zanthoxylum bungeanum - own seed
Zanthoxylum clava-herculis
Ziziphus jujuba
Toona sinensis - one of top five most nutritious plants in the world
Non-edibles
Herniaria glabra
Glaucium flavum
Veronicastrum virginicum
Scutellaria barbata
Verbena hastata