budget?
Yeah, budget makes a big difference. OK, on a limited budget, buy a bucket like this
They can be found in Bunnings or Big W for about $10. They are rubberised so you can fold them without breaking the bucket and they have a large capacity for water.
You can buy a shower from BCF or whatever for about $30. They work great and ours lasted for a few years before the. Pump failed.
I replaced the pump with a bilge pump and replaced the 10mm hose with 19mm hose.
I heat up water with a 15 litre stainless bucket (crab cooker) add the water to the big bucket mixed with cold water until the temp is just right. I then have a recycled shower for as long as you want. My Mrs iloves camping but is a bit precious when it comes to cleanliness. She is very happy with our shower setup, we will be using it for the next four days as we are going camping.
Hope this idea helps.