I use mainly the fingers.

Some scissors, any size will do, I prefer small ones and dry them
after using to prevent rust and marl build up.

I use a come to clean hairgrass, combing one's hair if you will.

I use large tweezers, these can be had for 2-6$ at most flea market
tool sale bins.

Plastic Paint scraper for pulling gravel away from the glass, leveling
the gravel etc.

About it.

Some folks use fishing line and cork etc to add plants to various
substrates/attach to wood/rock etc.

I think those sets are a waste of $. But some folks might like them.

Regards,
Tom Barr