Use a glass to make a speaker for your mobile phone
It’s likely that many of us will want to travel light. Maybe you don’t wish to bring your speaker on vacation. You may have planned to bring it with you but forgotten to pack it. You might not be out of luck if you use some hotel hacks.
You only need a glass that is large enough to fit your phone. Play your music by placing your phone in the glass with its speaker facing down. The sound will be amplified and the party will get started. Be careful not to disturb other guests.