Edible plant seeds/seedlings for growing in pots (Kingsmead)

we're enthused by the bug! Would welcome any seeds, half-packs, seedlings of any veg (or fruit??) that can grow in pots on a sunny patio. From dwarf beans to spinach, kale and lettuce to bell peppers and tomatoes.. all would be most gratefully accepted. [The only exception is 'hot peppers' which, sadly despite being easy to grow, do not agree with us]. We have some rooted indoor jade houseplants looking for new homes: we are not allowed to offer 'exchanges' but it would be great to find new homes amongst people we might already be collecting from, to save journeys, time and fuel/pollution.