Your own Poké Ball

Mine would be black with red, orange, and yellow flames on it. It would help you catch Fire type Pokémon easier.

 

This is a Celestial Ball. It helps the player catch Pokémon that have a connection to outer space (and that's quite a few Pokémon).


This is a Night Ball. It's like a fusion between a Luxury Ball and a Dusk Ball, providing the effects of both.


This is a Monochrome Ball. It's more effective on dark and ghost types.

 

I'm gonna make the Sparkle Ball. It helps catch Psychic, Fairy, and Shiny Pokémon. Carrying one around would make you have a higher chance of getting a shiny. It'll be rainbow colored, with some sparkles on top. I'll add a sprite later.

 

weather ball, would probably be blue with a sun on it. It would increase the catch rate if a weather condition was in effect.

 

Static ball. Would be just like a normal Pokéball, except blue and white instead of red and white. Greatly increases the catch rate when used on Pokémon that do not evolve.

 

I would invent the Sharp Ball. This Pokéball would help you capture any Pokémon that can use moves like Slash. It would be a black Poké Ball, with a blue button and...equator line...I guess? The ball would have three diagonal slash marks on the top and bottom.

 

Show off ball.
It has a 0.5x catch rate, but the opening animation is something super spectacular, and so is the design. One I cannot fathom because it'd need to be designed by the world's 1000 best designers, all together.

Also it's a poketriangle, not a ball. It'd be sold in Unova's hipster Oran store.