I have a little bowl for my used tea bags – I throw them away when either they go green, or the bowl overflows, whichever comes first
Not so much a little bowl as a long leaf-shaped dish thing, which probably had some arcane function but is better served as a teabag receptacle until it starts to overflow, by which time the bags are dry and won’t drip everywhere when they get put in with the compostable food waste. Which isn’t much, mostly vegetable offcuts.
The little teapot-shaped dish is what the teaspoon rests in, so it won’t leave tea stains all over the kitchen work tops.
That was my mum’s, I haven’t the heart to stop using it.