Plushes

Pokémon Friends
1999
Hasbro Bean Bag
2000
KutaKuta Pokémon
2000
Tomy
2001
Pokémon Center
2017
Pokémon Fit
2019
All Star Collection
2020

Figures

Pokémon Kids *
1999
Monster Collection
2000
Battle Museum
2000
Soft Mascot
2000
Hasbro
2002
Metal Collection **
2006
Yubiningyou
Collection | 2018
Cord Keeper
2018

* also came in clear variant
** came in five variants - bronze, silver, gold, copper, pewter

Keychains

Zenkoku Zukan Metal
Charm | 2012
Pokémon Tails
2013
Pokétabi
2016
Spring! Spring!!
Spring!!! | 2017

Pins & Badges

Pokétabi
2016
Big Can Badge
2017
Pokémon Core Pins
2023

Apparel

Original Stitch had a line called "Pokémon Shirts" that allowed you to get a custom-made polo shirt with a fabric of your choosing from 400+ different Pokémon. You could also get a face mask, apron, or simple bandana with the design. Unfortunately, to my knowledge I don't think anyone ever purchased any of the items with the Sentret design before the company closed down in mid 2023, so there are no photos of the indivudal products.
You could also get a small Sentret embroidery, as pictured below.

Other

Ball
1999 (?)
Stamp
2000
Candy Dispenser
2000 (?)
Chopstick
Holder | 2000 (?)
Rubber Stamp
2001 (?)
Tails iPhone Case
2013
Tails Folder
2013
Tails Pen
2013
SARASA Clip Pen
2022

Image credits: Yahoo Auctions Japan, Suruga-ya, eBay
If you'd like your photo removed please contact me.