Improvised one handed Melee Weapons

A small collection of some concepts/designs for simple post-apocalyptic improvised one-handed melee weapons and their scabbards/sheaths that should have somewhat creative design and construction while keeping the designs simple so they would be realistic to be built in post-apocalyptic conditions where there is a lack of high-end tools, materials and time. Most of them are very WW1 trench melee weapon inspired.
1. Bar push dagger. A simple push dagger (a type of dagger that is used in a punching manner) made from two steel bars, one-piece longer and sharpened into a blade and attached with a bolt and a nut to the shorter one. the grip is a simple oval chunk of wood attached with wood screws to the other two pieces of the knife. The scabbard (in this case more of a holster) to carry the knife with is made from nailed together wooden planks which resemble a wooden box that is then attached to the user's belt with a simple iron belt loop.
2. Stacked washer gripped dagger. A simple dagger resembling medieval rondel daggers made from a sharpened piece of round steel bar with a grip and guards made from washers of differing sizes which are secured on the blade and its tang by simply being peened in the pommel end. The dagger scabbard is a simple piece of folded sheet metal with a belt loop attached to it.
3. Pipe gripped knife. A large ye simple knife that gets its name from its grip being made from a hammered and flattened in one end piece of pipe so that a steel blade could be secured into it easily and held there with a bolt and a nut. To make the grip more grippy it has a thin coating of rubber-like material. The knife scabbard is similarly made from a flattened pipe with a simple belt loop attached so it could be worn on a belt.
4. Bar hammer. A simple hammer made from a wrought iron bar that has been shaped with a hammer-like head for general striking plus a pointier sharpened end for better penetration if the more normal hammer end does not work. Most of the grip has been flattened a bit just to make it not be completely round but oval which would help with edgealiment (even if there is no edge in this but you know what I mean) and a simple hook at the bottom of the grip to simple help to prevent the hammer from slipping from one's hand.
5. Square tubing baton. A simple baton made mainly from a turned square piece of square lumber with a piece of square tubing attached with a bolt and a nut to give the baton more heft and sturdiness for better striking.
6. Forged knuckle guard knife. A simple forged from the wrought knife with a knuckle guard that helps to protect the user's knuckles and to prevent the knife from slipping. The scabbard is made in the Taiwanese tribal manner consisting of a carved piece of wood with flat nails forming the rest of the scabbard. To wear the knife there is a simple meral belt loop nailed into the scabbard.
7. Tube disc mace. a simple ww1 trench mace esque mace consisting of a turned wooden main body and a flared out piece of tube that works as the mace's main striking end that has been attached to the handle with a long nail that is then hammered around the mace to keep everything secure.
8. Wire dagger. A simple ww1 trench dagger esque stapping implement made from a bent and sharpened piece of steel wire with its folded sheet metal scabbard with a canvas belt loop so the dagger can be worn on a belt.