I was interested in a Waterpik but I thought it would be too difficult to maintain. I found out about both a toothbrush and an oral irrigator that you hook up to your shower which are really cool.
There are also some tricks for oral hygiene that you don't get traditionally or when you go to the store for toothpaste. You can try putting a drop of Dragon's Blood on the toothbrush or brush with a bit of ozonated oil to help gum issues.
I purchased a generic water flosser from Amazon. Works great. I put an ounce or two of mouthwash in the reservoir when I fill it and I occasionally clean it by washing the reservoir. Very simple to maintain and an extremely effective oral hygiene tool. I have many teeth that are very close together and floss just breaks constantly (I can use those floss tools but don't like throwing them out each time).
Croton lechleri! It's been used traditionally for a lot of stuff and the active constituent is in an orphan drug to help GI issues with cancer. It helps wounds of all sorts and gum issues.
You can find the oral irrigator/toothbrush combos for looking for faucet oral irrigator on amazon. Maybe I'd misremembered the shower ones that are harder to find for the combos of both, but they're easy enough to find for a faucet adapter.
There are also some tricks for oral hygiene that you don't get traditionally or when you go to the store for toothpaste. You can try putting a drop of Dragon's Blood on the toothbrush or brush with a bit of ozonated oil to help gum issues.