In the past I've used Dogecoin for this.
this is most people have forgotten. before coins like Tether became a popular thing everyone was using coins like Doge which had a low fee and higher speed with a relatively stable price (relative to the time they kept them which was until the funds moved from one place to another). that is why it still has a high volume.
the funny thing is, nobody ever said Doge increased the price of bitcoin! but they do say it about Tether although they both have nearly the same supply and exact same usages.
Everyone looks at Dogecoin now as the meme coin of the crypto market, yeah no one has ever said that it will increase more than bitcoin has.
When you use stable coins you have to trust the issuer. Crypto currencies are about not trusting anyone. I've never trusted nor used USDT.
I've never used USDT either but I'm aware of the fact of the issue that it is being involved right now, not really now but from the past. The bad part has been gradually exposed and more and more crypto folks are starting to realized that they shouldn't support it. We're all aware of it here but for those folks that will continue to support it, they can't see the other side of it.