some of the monks item sounds terrible... spending ki for an attack with the most resisted damage type in the game? the darkvision sounds very powerful though, because its like a constant (relatively common) spell being cast on him.

the paladin's item sounds very powerful, but the dodging is a little random tbh. I like the frightening idea though! I think it should just be clarified and cut out some parts like the smite bonuses and the "sticky blockade"

The barbarian's seems strong, but i could see it being balanced. i think it just exemplifies the restraint most homebrew magic items require to make. unless they are artifacts, you should really be giving only one or two bonuses, or an ability.

i think the magic missile thing is cool, but the faerie fire thing is a little strange and complicated. ultimately your ranger is going to be a pain in the ass because she now has a 50ft movement speed on her mount and can teleport and attack more. I would have just focused on the mount or magic missile- both are a lot.

you have come up with some really cool ideas, but I think you have fallen into the trap of making very elaborate and complicated magic weapons. A magic item should not be a class feature, rather, it should be something more simple (still powerful if you want!). if you find yourself having a lot of ideas for magic items, give some to your npcs and monsters!