hidden gun storage table safe - Tom's Woodworking Shed
7 stunning under stairs storage ideas: home decor, shelving ideas, stairs, storage ideas, why not use your under the stair storage for storage and a hidden panic room
Your Own Secret Hidden Safe
20 Secret Hiding Places: The Family Handyman. Very nice. I assume this is a false tube probably in the basement.
Nifty Niches carved out between wall studs provide the prefect spot to conceal bathroom items of all shapes and sizes. Here, a trio of cutouts house luxury items. Black-and-white framed art prints function as cabinet doors.
Drill hole into top of hallow core door. add cigar tube with screw on top. add washer to top of cigar tube. place secret thing into tube. hide in top of door.
Could be useful - Hidden Key Storage - Planq Studio