Here are a few suggestions for your next trip from Caffiers(L Fontin)
In 5 hours, you can reach Düsseldorf, Essen.
In 6 hours, you can reach Frankfurt am Main.
In 7 hours, you can reach Genf, Lausanne.
In 8 hours, you can reach Zürich, Toulouse, Bern, Edinburgh, Luzern, Bremen, Nürnberg.
Reise buchen - SNCF Connect
Reise buchen - Deutsche Bahn
Reise buchen - Trainline