Simple solution is to sell it to a non-jewish person like a housekeeper or a coworker for $1.
And then just Have them leave it in your house.
I know it’s a kind of trick, but this trick works. The items are owned by a non-Jew and do not require tevilah
Vicki Hoffstein 
Sharon Hazan 
Maccabee Gabay
Is it possible to make a mikva in any way?
See this post
https://kashrut.org/?p=2336
Simple solution is to sell it to a non-jewish person like a housekeeper or a coworker for $1.
And then just Have them leave it in your house.
I know it’s a kind of trick, but this trick works. The items are owned by a non-Jew and do not require tevilah