I have tried many cable lifters, and some home-made solutions worked as well as much more expensive products on the market, so it is certainly worth experimenting. I've heard of successful attempts of toilet paper rolls being put under speaker cables

But this is not something you would like to look at while listening to your favourite music hah

Of course, there is a question of the degree of changes that cable lifters actually introduce. My all-time favourite is Furutech, but, for example, the best result under my amp power cord is from a boomerang I got in Australia

However, it is the original thing, made of an extremely hard Australian wood, not a Chinese product from a souvenir shop. The difference with and without the boomerang is stunning! Nothing can beat the boomerang here. It's not that you should use boomerangs as cable lifters, as it might even be a little offending to the native inhabitants in Australia, but I'm including the example as a hint to what actually matters in cable lifters. To sum up, it's definitely worth experimenting

Blocks of hard wood come to mind as the most cost-effective solutions. The cable in the photo is a Furutech Nanoflux NCF powering my tube amplifier.