A canvas army duffle bag that will hold 300lbs of sand costs about £11. The sand to fill it about £20. For £30, or $38 or so, you can get the only implement you ever need to be brutally strong. If you can clean and press a bodyweight sandbag, and also shoulder then squat your bodyweight in a sandbag 50 times in 20 minutes, then you will be extremely strong and well muscled.
You won't be as muscular necessarily as guys who have well rounded barbell-based programs. It is easier to get a pump and bring out certain muscle groups with BBs and DBs. If you want to be as big as possible then weights are really the best way to achieve that. However, if you want strength, power, and athleticism, you can go a very long way with a handful of odd object lifts and some bodyweight work (mainly pull-ups and push-ups). You won't look as strong, but for certain things, such as grappling with another human being, you may find you have a more useful type of strength.
You won't be as muscular necessarily as guys who have well rounded barbell-based programs. It is easier to get a pump and bring out certain muscle groups with BBs and DBs. If you want to be as big as possible then weights are really the best way to achieve that. However, if you want strength, power, and athleticism, you can go a very long way with a handful of odd object lifts and some bodyweight work (mainly pull-ups and push-ups). You won't look as strong, but for certain things, such as grappling with another human being, you may find you have a more useful type of strength.