Indeed installing and syncing 7 blockchains is a lot of work. That is why we have chosen those systems/wallets that are still relatively easy to use. For NXT we are hosting a secure node on TOR (use TOR browser and enable Javascript), to make it possible for people to create their own address without having to install NXT. The systems NEM and Waves have light wallets that are quick and easy to install and use. Omni, Ethereum, Bitshares, Counterparty and Waves are easy in the browser.

Here are the links you can use to create the wallets without having to install them on your local system:

 Omni: https://www.omniwallet.org/
 Eteherum: https://myetherwallet.com/
 NEM: https://www.nem.io/install.html (use nano wallet for ease of use)
 Bitshares: https://openledger.io/create-account/wallet
 Counterparty: https://wallet.counterwallet.io/
 NXT: http://nsuspd3qauiydouj.onion (TOR hosted by Internet of Coins for ease of use)
 Waves: https://wavesplatform.com/downloads.html (light wallet or app for ease of use)

Please make backups of all your data! This is the decentralized world. Nobody can help you if you lose your keys.
We do NOT advise to use centralized exchange wallets like Bittrex.

The official beta wallet is scheduled for January 2018. This wallet will support HYBRID tokens and is much easier to use and maintain than 7 wallets.

To get coins for Twitter bounty.
Can I send only Eteherum, Waves, Counterparty, Omni,,
Or do I have to send all 7?
I can not install NXT, Bitshares, NEM.
Will I lose my reward?
Installing these 3 wallets is a big problem for me!
Hope for your understanding.