Mini ovulation microscopes are convenient, compact and endlessly reusable.
You can spend more on one of these, but you don’t have to.

Here’s a solid little mini microscope that should last you for years…plus,
it is affordable:

Personal Lubricant:
Even when you are ovulating, you may need a vaginal lubricant.
Choose one that provides moisture without harming sperm.
This is a product that is recommended for its safety and friendliness
to both sperm and eggs, alike: