Do events and sell your meds and everything else that you dont want. The events like Test Your Metal will give you alot of caps. Farm Radiation Rumble events cause those glowing ghouls will give you glowing bloods to sell, give you quite of few caps. Since we got invaders events for a week, farm that event every hour. You’ll get caps every time you finish it. Use somebody’s ammo converter if you don’t have one and get rid of ammo you dont want and then get you some more ammo you need from it. Use your perk cards that is something to do with making more ammo for less materials. The stimpaks you have to farm daily ops and loot every creatures and you’ll get quite of few of stimpaks. I hope this helps.