yes I could make my own weapons, modify others, and know how to use them and things. why would I not..
Going from the original post this is probably the best plan. Let's face it, my friends across the pond ought not find it too difficult to arm themselves with shooters, people in the countryside can choose from a variety of farming/gardening tools and for us in big cities, sporting equipment such as hockey sticks (had to be a Canadian to suggest that!) cricket bats, baseball bats (won't find many of those in England - maybe in Wales??) kitchen knives (they allowed?) you really are only limited by your imagination.
There is an e-book on making your own Shillelagh for Irish Stick Fighting. if you want to know what's like see videos under Irish a Stick Fighting?
Sad to say that I can't even know in how to sharpen my knives. Lol. But when given a skill, I want to create my own version of pocket knife with feminine design.
Sling shots are easy to make. I use to make them when I was a kid. Makeshift Bow and arrows are also fairly easy to make. Made one once when I was a kid as well. Nunchucks, easy, I've made quite a few of those when I was a kid. I suppose I could always find a way to sharpen a stick or something too! Other than that, normal every day tools you could find laying around could easily substitute as weapons such has garden hoes, shovels, metal rakes, etc...
I have build few Nunchakus from plastic PVC pipes for training purposes only, later i found that its good enough to be used as a weapon even in road . Other things like Buji is pretty easy to build if you have some basic understanding of cutting-shaping metals (Which I Don't).
Master Don Miller made weapons and so, I do and students can too. Anybody can make at least one weapon - and then go back and make it of something besides pine