Reddit mentions of Trudeau Silicone Vegetable Steamer with Handles

As for "accessories" I might recommend, whether you buy them or find them around the house or at various kinds of stores (including thrift stores), some kind of "steam basket" would be good.

The metal-rack "trivet" (riser) that comes with the unit is good for larger solid foods you might ever want to cook above the boiling liquid in the bottom and only up in the steam (e.g., perhaps whole potatoes/yams, eggs for hard boiling, chicken pieces, etc...although those can all be put right in the bottom too).
It's also good for putting other bowls, plates, containers on top of to lift those out of the bottom when needed. That might be to cook foods "PiP" (pot in pot, pan in pot) too which can have other advantages.
https://www.reddit.com/r/instantpot/comments/6mrkek/do_you_need_a_cake_setting_to_make_cake/dk50ww1
https://www.google.com/images?q=Instant+Pot+PiP+"pot+in+pot”

It can be good to have a stand-alone "steamer basket" that has smaller holes than the metal rack (and often handle/s, feet, etc), for things like peas and smaller items to keep them from falling through if you want to cook those in the steam.
But you can also use those bowls/mesh baskets/etc on top of the metal rack trivet (or any other "risers") to hold things like that so they won't fall through. Some people just use the regular metal "petal" type steaming baskets but I find those harder to clean and many have a post up the middle which can get in the way, so the one I use (when I use one) is this one:
https://www.amazon.com/Trudeau-Silicone-Vegetable-Steamer-Handles/dp/B001GBL9X4

I've also actually purchased a "Fat Daddio" pushpan (from amazon) for making things like taco pie and lasagna:
https://www.amazon.com/gp/product/B0012Q32JM (this one fits well in the 6 qt models)
And I use various metal bowls/containers (even disposable aluminum ones) from my cabinets or occasionally purchased for the PiP method, etc.

Re recipes that can be "prepped" at once then frozen for later in batches, some people do that, or they may just freeze one or more "leftover" meats and/or whole meals for using later.
One of the Instant Pot groups at Facebook is specifically for that too, if you're interested:
https://www.facebook.com/groups/1550385038606032
Or you could do searches for those kinds of recipes (prep, freezer meals, batch...or "dump" recipes as well perhaps) in the largest group Instant Pot Community too...here's one search:
https://www.facebook.com/groups/InstantPotCommunity/search/?query=freezer%20meals

first off, not sure if serious or not - but if you are serious - get a steam basket like this one: http://www.amazon.com/Trudeau-Silicone-Vegetable-Steamer-Handles/dp/B001GBL9X4
then just put a bit of water in a pot, set in the basket full of veggies and steam them for a few mins - DONE! :)