I wanted to share this post that Tibia Decorations recently posted. It has a great collection of items for Valentine's Day as well as examples of how they are used in decorations- https://tibiadecorations.com/valentines-day-decorations/
There are way too many items to list out individually, but some of my personal favorites from quests are:
Candle Made of Human Tallow![latest?cb=20130704181306&path-prefix=en&format=original](https://lh7-us.googleusercontent.com/UVfkWi7tR7v17SS2FqpVtLHXYIFk8w4s6XeXKZdWBVInTZgcr3TUCcq28ItVvmqWLXQB7PgIlOG6OR7yu7gqO3_ijiQHOXcoAknJK8fmaS5AdI2ejGSrVt8QvlX4Cr0lix3MhHMatA-aW8ICcrklNCQ)
Lace trimmed Handkerchief![latest?cb=20201106142303&path-prefix=en&format=original](https://lh7-us.googleusercontent.com/17jQQumWop-RVu2rkr5NmTYkdssl4Of5djjPEYfPxmRwJa9ywR_pYMD0y0Cff9vAeYH7vdEe5YXWuWAddbcnhe-5qXARI5zKbrDMLQ5iX2Z9lYM5l5z5XXa1HLSN1nr1zp0LUQyfsHGchf9AnI1-KJ8)
Lonely Crystal![latest?cb=20120628182706&path-prefix=en&format=original](https://lh7-us.googleusercontent.com/WXo-SkFkdVTUFppcHCiCt9BY7GHQA-oMXo7cnVAtWKcr8cEPqhfsI85PBFV9pSW2820UujUKzIpfvizRcB8m6Acq7UjL9TjBGZAfBxcWhlcnYsIYlV-FbyJaVI3NgvNyrxgs9FH8JHy2tR-xFiBNEIY)
Violet Tulip![image](https://lh7-us.googleusercontent.com/ie-rzm2WEpbO5oSAxp9lDAN0LJLK6hW8MApUW5pdPflYdbP0bttBgiP6mNO41LMk7rHZT1FfAZj8OSrFwENf7qWkWf9h5-4YypM0ve4CHlkKAaQseIL1bVFrhstu-a1lkBkWnZKxHcdurBzWedy2Zu4)
Coral Vow Flower![image](https://lh7-us.googleusercontent.com/Fek_ePwaUj7InveZmKUWfO2XX8xEVPez0GfEG1qLCAaysmx2hlUCQWMOUP0yisddBNRSdND2Eeh8DeNj-ogF61W0wfnTEqXg833HsJqzPZOnUW4rod0Fbaer6l1afHh1G9VHZOKUbyIN019ZNaQ_bOA)
Love Potion![image](https://lh7-us.googleusercontent.com/09UpnKiXaLNP8ozQeUxi_yWJQkXlGC0gAyywF_0Pmyj_brn-UH3rjec_I53K2Jr55-7pXMcnO9eHUZoYKm2BmUJp3Osl85XCzwZHmEdAfY14oXKtSX4gjurgMF8dz-4MndN4OcTNMp_Q-eTKB5rnsjE)
Happy decorating!