How do I interact with inventory items?
The inventory is located in the menu that appears when you click on/touch the top of the screen.
In the PC version, right-click on an item to look at it and left-click on it to pick it up. In the mobile version, touch any tagged item to get two icons, hand and magnifying glass. Touch the magnifying glass to look at the thing and the hand to use it.
If you can use an item in the scene, when you left-click on an item in the scene, you'll get an option to use an inventory item on it, like "Use watering can on flowerpot." If you don't see such a line, either you can't use that item like that or there's another way to get the two things together.
To combine two items, left-click/use the hand icon on the first item, then left-click/touch the second item. If they can be combined, that'll do it.
Guide listing help
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "How do I interact with inventory items?" in The Blackwell Legacy. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.
Hints written by Lynn S. Hendricks
Lynn S. Hendricks
Among other things, I write hints for games like Nancy Drew. And I love words!