So I happened to find an old bitcoin mining rig thats still in complete working condition, it has 10 GPU's and a power supply, i don't think it would be profitable to use it for mining, is there anything else i can do with 10 GPU's?
It would be hard to define complete working condition. Even though it is working, the performance is likely to be lower due to the long hours of power on time. Failure rate would be quite high due to the constant heat too. If it has 10 GPU with one single power supply, it would possibly be a low powered GPU, not suitable for gaming. You may want to try to use it for alt coin mining. Due to the volatility, your profitability can be negative or positive.