References

Tools Commonly Used in Aquatic Gardening
By Tom Barr

Tweezers/Hemostats are invaluable for precise plantings. Often fingers are too big or awkward or might disturb the area too much and this calls for "super tweezers". Using them to plant can be very nice and get the stem way down into the substrate. Tweezers also don't damage the plant when planting. They are also good for pushing roots or other items back into the substrate. Also useful for picking on algae and precise leaf removal on softer leafed plants. One of my most used tools.
Plastic Paint Scrapers are my equivalent to Amano's triangle shaped trowel. I like the plastic as it does not scrape the glass as much as steel and metal. I use it only a little for leveling gravel. Mainly I use it to "pull back" The front edge of my gravel layer. This keeps the gravel from shifting forward and maintains the slope in the front or the sides of the tank. Also good for scraping algae below the gravel line on the front edge.
Turkey baster is an all around useful tool for detritus removal and fish acclimation and likely 101 other uses.
Scissors are a must-have. Many stems like Anubias are quite hard to pinch well with the fingers. Using the scissors minimizes the damage done to the plant reducing shock. Great for individual leaf removal, trimming moss and Riccia, and general gardening.
Algae Scrub Pad needs no explanation. Clean your glass.
A Comb can be used to remove hair algae from hair grass like combing your hair basically. The comb is specific for this type of infestation only though, unless you wish to find other uses for it.
A Net is a must-have for the fish and the leaves that commonly float to the surface. I trim my plants first then after I'm done I do a surface skim with the net to remove all the cuttings and leftovers. Great for duckweed, algae and detritus removal.
Cotton String can be useful for trying plants down to objects. Java moss is commonly tied down with this string. It rots after awhile then the moss is attached. Java fern and other plants can be attached in this manner.
Hairnets and Fishing Line can be used to hold down Riccia like Amano does. Tie with a gentle touch and many times around. Branches are especially good for Riccia. Amano advocates using moss first then a layer of Riccia on top of that. This gives a better surface for the Riccia to become entangled and some of the moss attaches to the Riccia and the branch.