To join in the smart home revolution, you don’t necessarily have to rush out and replace all of your ‘dumb’ appliances and home accessories with fancy, expensive Internet-connected smart devices. A number of inventors and tech entrepreneurs are launching smart accessories to help you retrofit your existing appliances, door locks, light bulbs, and more.

Below we’ve rounded up five of the most interesting and useful smart home accessories on crowdfunding site Kickstarter right now:

Peeple: caller ID for your front door

Who is behind it: Building 10 Technology, Inc.

Location: Austin, TX

Kickstarter goal $50,000

Funds raised: $56,422 from 409 backers with 32 days to go

Peeple is a camera that mounts to the existing peephole or sticks on the glass of a door. It connects to your home Wi-Fi and sends notifications to both iOS and Android phones via an app. Using the app, you can see who’s at your door from anywhere in the world.

Peeple also stores a history of knocks and door opens so you can review who came and went while you were away.

Peeple is scheduled to start shipping in May 2015 to Canada, Mexico, and the U.S.

Noki: the smart door lock for Europe

Who is behind it: Noki Home Solutions GmbH

Location: Graz, Austria

Kickstarter goal: €125,000 ($137,350)

Funds raised: €242,187 ($266,115) from 1,344 backers with 32 days to go

The Noki smart door lock for European cylinder locks fits over an existing lock and lets you lock or unlock your door from your smartphone (iOS and Android). You can also give access to friends or family to allow them easy access and revoke a user’s access remotely.

Noki is controlled via Bluetooth and Wi-Fi, and the app tells you if your door is locked or not.

Noki is scheduled to start shipping worldwide by December 2015.

Nuimo: seamless smart home interface

Who is behind it: Senic

Location: Berlin, Germany

Kickstarter goal: €55,000 ($60,437)

Funds raised: €164,876 ($181,165) from 1,349 backers with 18 days to go

Nuimo is a programmable wireless controller for connected devices. Nuimo lets you control your devices through touch-based inputs using capacitive touch, gesture control, and a 360-degree analog ring. You can quickly switch between devices and Nuimo works with any Bluetooth device or application including Sonos and Philip Hue.

Nuimo currently has more than 30 integrations, and more to come, you can control your music, lights, locks and more.

Nuimo is scheduled to start shipping to select countries in October 2015.

BuddyGuard’s Flare: smarter home security

Who is behind it: BuddyGuard

Location: Berlin, Germany

Kickstarter goal: €80,000 ($87,904)

Funds raised: €79,730 ($87,607) from 400 backers with 17 days to go

BuddyGaurd’s Flare is a clever home alarm that uses facial or voice recognition and/or your smartphone’s location to activate or deactivate itself. If it does not recognize the face picked up by the HD camera or the smartphone, it will send an alert to you or any trusted users you configure.

Flare is quite advanced and includes a thermometer, accelerometer, microphone, loudspeaker, HD camera, siren, motion detector and more.

Flare is scheduled to ship worldwide by December 2015.

Hook: home automation on a budget

Who is behind iy: Hack-a-Joe Labs

Location: Seattle, WA

Kickstarter goal: $25,000

Funds raised: $30,815 from 477 backers with 59 hours to go

Hook is a device that connects inexpensive remote-controlled outlet adapters and bulb sockets to the Internet. This enables existing appliances and lighting in the home like lamps, light bulbs, coffeemaker, window fan, and more to be controlled with your smartphone.

Hook works with IFTTT (now IF). You can schedule operations of routine tasks such as operating holiday lights between sunset and sunrise and create rule-based scenarios like turning your coffee maker ‘on’ when the alarm goes off in the morning.

Hook is scheduled to start shipping to Canada and the U.S. in December 2015.

Main image credit: andyp uk via photopin cc; Product screenshots: SiliconANGLE via Kickstarter