Try some nipple suckers- check Amazon. You can also buy goat milkers too, although it's quite an expensive toy to start with. Breast pumps make any untrained nipple hurt like a SOB... maybe check into starting with a dual breast pump.. some of the newer ones have incredible suction. This is the one I'm using to induce lactation. https://www.amazon.com/Bellababy-Electric-Feeding-Suction-Definition/dp/B07CZZN1VX/ref=sr\_1\_31?crid=3QY0DT9N7HSKD&keywords=dual+breast+pump&qid=1662178193&sprefix=dual+breast+pump%2Caps%2C440&sr=8-31
Looks like there are a few different options on Amazon (DooWay Women's Fashion Long Leather Gloves Faux Lamnskin PU Black White Cow Prints for Costume Party https://smile.amazon.com/dp/B08YD1D2LZ/ref=cm_sw_r_apan_glt_i_9M07TFKVXDFQ4HCJ3M8K?psc=1) I saw at least two others at different price points, made of different material, etc.
This is a nice setup for the price. It has the proper pulsators for safety. Amazon
[This is the one]https://www.amazon.com/gp/product/B07Z817Y1T/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1) I bought. A pulsation turns the vacuum on and off to the outer sheath of the cup. This causes it to squeeze then release the teat massaging it while the cup keeps pulling the milk out. All you need is a 2 line cup and something to turn the vacuum on then open to the air to make it pulsate, I am using a programmable timer and a 3 way air valve. Here is a cheaper one that already has the pulsator built in. I don't know how they can sell the ones without, they really don't work correctly even on an animal.
It's from Amazon, but seems to be sold out. Here's the link
Blooming Jelly Womens Plaid Dress Sleeveless Swing A line Gingham Summer Short Mini Dresses with Pockets(M,Red) https://www.amazon.com/dp/B07Q46TVS6/ref=cm_sw_r_cp_apa_i_6CFjEbGMFYRVP
Thank you! I got it from Amazon. Just search for cow print bikini. This is the XL. ALAZA Use4 Cow Print Black White 2 Piece Swimsuits Bathing Bikini Sets for Women X-Large https://www.amazon.ca/dp/B07D7785V7/ref=cm_sw_r_cp_api_i_oEBtCbNVYBVV8
Use these
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Those pumps in the link are perfect to start off with.
You could also get a set of basic adjustable nipple clips, or tie the pumps down with weights to simulate a milking machine. This is an excellent starter kit for quick simple bondage, and if you add a spreader bar you might be able to simulate a yoke.