Texas is the land where regulation is always second, or so they say. However, it’s also a state where politicians have chosen to regulate oddly specific...
(f) A person who possesses six or more obscene devices or identical or similar obscene articles is presumed to possess them with intent to promote the same.
So it's not just 6 obscene devices, you could have two Rampant Rabbits and break the law. I assume a double-ended dildo counts as one obscene device unless they can be disengaged to make two identical ones.
"Obscene devices" is rather a loose term too. The kinky are likely to have quite a few knocking about but for personal use only.
They define them in 43.21(7), albeit, still quite loosely:
(7) "Obscene device" means a device including a dildo or artificial vagina, designed or marketed as useful primarily for the stimulation of human genital organs.
So maybe a devices like the magic wand is in the clear since it's marketed as a massager. I wonder if a vibrator could simply be repackaged and marketed as a massager, as well.