In addition to what CynthiaF posted above.
In these types of scenarios it is much more easier to consult, study & follow the maps instead of the videos.
Have you checked out the relevant Wiki pages, quests, maps, videos, guides, walkthroughs & hidden gifts
You can easily find the solutions to puzzles if you check out the walkthroughs & maps.....everything is clearly & concisely highlighted.... including hidden gifts.
The Wiki pages & this forum will become your best friends throughout your Diggys Adventure journey.
Maps - this link provides the cleared game mines & hidden gifts
Also I found some extra hidden gifts in Christmas 2014 that don't appear on the Wiki maps....you can check them out